[{"data":1,"prerenderedAt":821},["ShallowReactive",2],{"lexique-en-lean-mass":3,"lexique-all-en":310,"lexique-trans-en-lean-mass":816},{"id":4,"title":5,"author":6,"body":7,"category":293,"description":294,"extension":295,"faq":296,"lang":297,"lead":296,"letter":298,"meta":299,"navigation":300,"path":301,"ref":13,"related":296,"resources":296,"seo":302,"sources":303,"stem":307,"updated":308,"__hash__":309},"lexique/lexique/en/lean-mass.md","Lean mass","Ekklo",{"type":8,"value":9,"toc":281},"minimark",[10,14,19,32,35,38,41,46,98,100,104,145,147,151,154,167,170,181,183,187,219,221,225,228,239,241,244,246,250,264,266,270],[11,12,5],"h1",{"id":13},"lean-mass",[15,16,18],"h4",{"id":17},"definition","Definition",[20,21,22,23,27,28,31],"p",{},"The ",[24,25,26],"strong",{},"lean mass"," (or fat-free mass, FFM) is the ",[24,29,30],{},"total weight of all your body tissues except fat",". It includes muscles, bones, organs, water, blood, connective tissues.",[33,34],"blockquote",{},[20,36,37],{},"💡 Total weight = lean mass + fat mass. They're the two complementary halves of body composition.",[39,40],"hr",{},[42,43,45],"h3",{"id":44},"whats-inside-lean-mass","What's inside lean mass?",[47,48,49,62],"table",{},[50,51,52],"thead",{},[53,54,55,59],"tr",{},[56,57,58],"th",{},"Component",[56,60,61],{},"% of lean mass",[63,64,65,74,82,90],"tbody",{},[53,66,67,71],{},[68,69,70],"td",{},"Skeletal muscles",[68,72,73],{},"40-50%",[53,75,76,79],{},[68,77,78],{},"Body water",[68,80,81],{},"30-40%",[53,83,84,87],{},[68,85,86],{},"Bones",[68,88,89],{},"15-20%",[53,91,92,95],{},[68,93,94],{},"Organs and other tissues",[68,96,97],{},"10-15%",[39,99],{},[42,101,103],{"id":102},"why-is-lean-mass-crucial","Why is lean mass crucial?",[105,106,107,115,121,127,133,139],"ul",{},[108,109,110,111,114],"li",{},"✅ ",[24,112,113],{},"Higher metabolism",": lean mass largely determines BMR",[108,116,110,117,120],{},[24,118,119],{},"Functional strength",": more muscle = more force",[108,122,110,123,126],{},[24,124,125],{},"Strong skeleton",": bones reinforced by training",[108,128,110,129,132],{},[24,130,131],{},"Reduced injury risk",": stable joints",[108,134,110,135,138],{},[24,136,137],{},"Longevity",": studies link lean mass to lower mortality",[108,140,110,141,144],{},[24,142,143],{},"Aesthetics",": athletic, full silhouette",[39,146],{},[42,148,150],{"id":149},"lean-mass-vs-muscle-mass","Lean mass vs muscle mass",[20,152,153],{},"Don't confuse the two:",[105,155,156,162],{},[108,157,158,161],{},[24,159,160],{},"Muscle mass",": skeletal muscles ONLY",[108,163,164,166],{},[24,165,5],{},": muscles + bones + organs + water + everything except fat",[20,168,169],{},"For an 80 kg adult man:",[105,171,172,175,178],{},[108,173,174],{},"Lean mass: ~65 kg (81%)",[108,176,177],{},"Skeletal muscles: ~32 kg (40%)",[108,179,180],{},"Fat mass: ~15 kg (19%)",[39,182],{},[42,184,186],{"id":185},"how-to-gain-lean-mass","How to gain lean mass",[105,188,189,195,201,207,213],{},[108,190,110,191,194],{},[24,192,193],{},"Heavy strength training",": 3-5x/week",[108,196,110,197,200],{},[24,198,199],{},"Sufficient protein",": 1.6-2.2 g/kg",[108,202,110,203,206],{},[24,204,205],{},"Caloric surplus",": +200-400 kcal/day",[108,208,110,209,212],{},[24,210,211],{},"Adequate hydration",": water = ~30% of lean mass",[108,214,110,215,218],{},[24,216,217],{},"Quality sleep",": 7-9h for hormonal recovery",[39,220],{},[42,222,224],{"id":223},"watch-out-for-water-variations","Watch out for water variations",[20,226,227],{},"Lean mass measurements (especially bioimpedance) are highly affected by hydration:",[105,229,230,233,236],{},[108,231,232],{},"Dehydrated → lean mass reads low",[108,234,235],{},"Just after eating salty foods → lean mass reads high (water retention)",[108,237,238],{},"Just after intense workout → distorted readings",[33,240],{},[20,242,243],{},"⚠️ Always measure under the same conditions: morning, fasted, after bathroom, before drinking.",[39,245],{},[42,247,249],{"id":248},"common-mistakes","Common mistakes",[105,251,252,255,258,261],{},[108,253,254],{},"❌ Confusing lean mass and muscle mass",[108,256,257],{},"❌ Trusting bioimpedance readings without controlling conditions",[108,259,260],{},"❌ Sacrificing lean mass during aggressive cuts",[108,262,263],{},"❌ Stopping strength training when getting older",[39,265],{},[42,267,269],{"id":268},"key-takeaways","Key takeaways",[20,271,272,273,276,277,280],{},"Lean mass is ",[24,274,275],{},"everything except fat in your body",". Build it (heavy training + protein + surplus), protect it (controlled cut, never aggressive), and track it under stable conditions. ",[24,278,279],{},"Optimal lean mass = solid foundation for life",".",{"title":282,"searchDepth":283,"depth":283,"links":284},"",2,[285,287,288,289,290,291,292],{"id":44,"depth":286,"text":45},3,{"id":102,"depth":286,"text":103},{"id":149,"depth":286,"text":150},{"id":185,"depth":286,"text":186},{"id":223,"depth":286,"text":224},{"id":248,"depth":286,"text":249},{"id":268,"depth":286,"text":269},"anatomy","Lean mass is everything in your body except fat: muscles, bones, organs, water. A real performance indicator.","md",null,"en","L",{},true,"/lexique/en/lean-mass",{"title":5,"description":294},[304],{"label":305,"url":306},"ACSM body composition resources","https://www.acsm.org","lexique/en/lean-mass","2026-07-27","cu20-oJlXY0Bpe_O5wt9Ni-nNF8ULMZpOH7BAJ5Pz58",[311,315,319,323,327,331,335,339,343,347,351,355,359,363,367,371,375,379,383,387,391,395,399,403,407,411,415,419,423,427,431,435,439,443,447,451,455,459,463,467,471,475,479,483,487,491,495,499,503,507,511,515,519,523,527,531,535,539,543,547,551,555,556,560,564,568,572,576,580,584,588,592,596,600,604,607,611,615,619,623,627,631,635,639,643,647,651,655,659,664,668,672,676,680,684,688,692,696,700,704,708,712,716,720,724,728,732,736,740,744,748,752,756,760,764,768,772,776,780,784,788,792,796,800,804,808,812],{"title":312,"description":313,"slug":314,"ref":314},"1RM (One-Rep Max)","1RM is the heaviest load you can lift for one clean repetition — the reference for strength programming and percentages.","one-rep-max",{"title":316,"description":317,"slug":318,"ref":318},"AMRAP - As Many Reps/Rounds As Possible","AMRAP is a high-intensity training format: do as many reps or rounds as possible in a fixed time. CrossFit favorite.","amrap-as-many-reps-rounds-as-possible",{"title":320,"description":321,"slug":322,"ref":322},"ATP (Adenosine Triphosphate)","ATP is the universal energy currency of the body. Every muscle contraction, every cellular function depends on it.","atp-adenosine-triphosphate",{"title":324,"description":325,"slug":326,"ref":326},"Abduction","Discover what abduction is in bodybuilding, this movement which moves a limb away from the central axis of the body to develop the stabilizing muscles.","abduction",{"title":328,"description":329,"slug":330,"ref":330},"Active recovery","Active recovery uses light activity to speed muscle recovery. Find out how to effectively integrate it into your routine.","active-recovery",{"title":332,"description":333,"slug":334,"ref":334},"Adduction","Adduction is a movement that brings a body part toward the body's midline. Opposite of abduction.","adduction",{"title":336,"description":337,"slug":338,"ref":338},"Aerobic System","The aerobic system produces energy with oxygen, fueling long-duration efforts. It's the foundation of endurance and recovery.","aerobic-system",{"title":340,"description":341,"slug":342,"ref":342},"Anabolic window","The anabolic window is the post-workout period considered ideal for nutrition. The reality: it's much longer than thought.","anabolic-window",{"title":344,"description":345,"slug":346,"ref":346},"Anaerobic System","The anaerobic system produces energy without oxygen — for explosive, intense efforts. Limited but powerful, it fuels strength and sprints.","anaerobic-system",{"title":348,"description":349,"slug":350,"ref":350},"BCAA","BCAAs are 3 essential branched-chain amino acids: leucine, isoleucine, valine. Discover their real usefulness, timing, and whether you actually need them.","bcaa",{"title":352,"description":353,"slug":354,"ref":354},"BMI","BMI (Body Mass Index) is a quick health screening tool, but it doesn't account for body composition. Limited but useful.","bmi-body-mass-index",{"title":356,"description":357,"slug":358,"ref":358},"BMR","BMR (Basal Metabolic Rate) is your resting metabolism — the calories burned just to stay alive. Learn how to calculate and optimize it for your fitness goals.","bmr",{"title":360,"description":361,"slug":362,"ref":362},"Beta-alanine","Beta-alanine is an amino acid that raises muscle carnosine and can help buffering in efforts of ~1–4 minutes; tingles (paresthesia) are common.","beta-alanine",{"title":364,"description":365,"slug":366,"ref":366},"Block periodization","Block periodization concentrates training into focused blocks (accumulation, intensification, realization) with clear priorities.","block-periodization",{"title":368,"description":369,"slug":370,"ref":370},"Blood flow restriction (BFR)","BFR training uses cuffs to partially restrict blood flow so lighter loads can still stimulate hypertrophy — with safety constraints.","blood-flow-restriction",{"title":372,"description":373,"slug":374,"ref":374},"Body fat percentage","Body fat percentage measures the share of fat in your total body mass. A key indicator of body composition.","body-fat-percentage",{"title":376,"description":377,"slug":378,"ref":378},"Body recomposition","Body recomposition is gaining muscle and losing fat at the same time. Possible but slow — discover the conditions for success.","body-recomposition",{"title":380,"description":381,"slug":382,"ref":382},"Bodyweight","Bodyweight training uses your own body as resistance. No equipment, anywhere, scalable to any level.","bodyweight",{"title":384,"description":385,"slug":386,"ref":386},"Caffeine","Caffeine is a stimulant that can raise alertness and training performance; dose and timing matter for sleep and anxiety.","caffeine",{"title":388,"description":389,"slug":390,"ref":390},"Calisthenics","Calisthenics builds strength and skill primarily with bodyweight patterns (push-ups, pull-ups, dips, levers) and progressive variations.","calisthenics",{"title":392,"description":393,"slug":394,"ref":394},"Calorie Maintenance","Caloric maintenance is the calorie level keeping your weight stable. Foundation of any nutritional plan.","calorie-maintenance",{"title":396,"description":397,"slug":398,"ref":398},"Calorie Surplus","A caloric surplus means consuming more calories than you burn. Mandatory mechanism for serious muscle building.","calorie-surplus",{"title":400,"description":401,"slug":402,"ref":402},"Calorie deficit","A caloric deficit means consuming fewer calories than you burn. It's the only proven mechanism for fat loss. Learn how to set yours up properly.","calorie-deficit",{"title":404,"description":405,"slug":406,"ref":406},"Calories","Calories measure the energy provided by food. Understanding your caloric needs is the foundation of every fitness goal.","calories",{"title":408,"description":409,"slug":410,"ref":410},"Carbohydrates","Carbohydrates are the main source of energy for intense training. Discover your needs, the different types and their role in performance.","carbohydrates",{"title":412,"description":413,"slug":414,"ref":414},"Casein","Casein is a slower-digesting dairy protein, often used between meals or at night to help hit daily protein targets.","casein",{"title":416,"description":417,"slug":418,"ref":418},"Circuit training","Circuit training chains several exercises with little rest. Ideal for burning calories and improving cardiovascular fitness while keeping muscle.","circuit-training",{"title":420,"description":421,"slug":422,"ref":422},"Cluster sets","Cluster sets break a set into mini-bouts with short intra-set rests to keep bar speed and load high — useful for strength and power.","cluster-sets",{"title":424,"description":425,"slug":426,"ref":426},"Collagen","Collagen is a structural protein; supplements may support connective tissue goals but are incomplete for total muscle protein needs.","collagen",{"title":428,"description":429,"slug":430,"ref":430},"Compound exercise","A compound exercise trains several joints and muscle groups at once (squat, hinge, press, pull) — high return for strength and hypertrophy.","compound-exercise",{"title":432,"description":433,"slug":434,"ref":434},"Concentric (Phase)","The concentric phase is the lifting movement, where the muscle shortens under load. It's the active phase that produces force.","concentric-phase",{"title":436,"description":437,"slug":438,"ref":438},"Cool-down","A cool-down is light activity after hard work to gradually lower intensity; useful for feel and transition, not magic recovery.","cool-down",{"title":440,"description":441,"slug":442,"ref":442},"Creatine","Creatine is the most studied supplement in sports nutrition, proven to boost strength, power and muscle mass. Learn dosage, timing and real benefits.","creatine",{"title":444,"description":445,"slug":446,"ref":446},"Cutting","A cutting phase is a period of caloric deficit aimed at losing fat while preserving muscle. Discover how to do it without losing your hard-earned gains.","dried",{"title":448,"description":449,"slug":450,"ref":450},"DOMS (Delayed Onset Muscle Soreness)","DOMS is the muscle soreness that appears 24-72h after exercise. Discover its causes, how to manage it, and what it really means for your progress.","doms-delayed-onset-muscle-soreness",{"title":452,"description":453,"slug":454,"ref":454},"Deload","Deload is an active recovery week where you intentionally reduce volume and intensity to allow your body to fully recover and come back stronger.","deload",{"title":456,"description":457,"slug":458,"ref":458},"Dietary fiber","Dietary fiber supports satiety, digestion and cardiometabolic health; useful in fat-loss adherence plans.","dietary-fiber",{"title":460,"description":461,"slug":462,"ref":462},"Dropset","A dropset extends a set by reducing the load when failure hits. Powerful intensification method for hypertrophy.","dropset",{"title":464,"description":465,"slug":466,"ref":466},"EMOM - Every Minute On the Minute","EMOM (Every Minute On the Minute) is a training format where you start a set at the top of each minute and rest until the next.","emom-every-minute-on-the-minute",{"title":468,"description":469,"slug":470,"ref":470},"Eccentric (Phase)","The eccentric phase is the lowering movement, where the muscle lengthens under tension. It's the most damaging phase and the key driver of hypertrophy.","eccentric-phase",{"title":472,"description":473,"slug":474,"ref":474},"Electrolytes","Electrolytes (sodium, potassium, magnesium…) are minerals that conduct electrical signals and help fluid balance, especially with heavy sweating.","electrolytes",{"title":476,"description":477,"slug":478,"ref":478},"Exercise selection","Exercise selection is choosing movements that fit the goal, equipment, anatomy and skill — the foundation of a good program.","exercise-selection",{"title":480,"description":481,"slug":482,"ref":482},"Extension","Extension is the anatomical movement that increases the angle between two body segments. Opposite of flexion.","extension",{"title":484,"description":485,"slug":486,"ref":486},"Fat mass","Fat mass is the total weight of fat tissue. Essential for survival, but excess harms health and aesthetics.","fat-mass",{"title":488,"description":489,"slug":490,"ref":490},"Fibers","Muscle fibers are the cells that make up muscle. Two main types — Type I (slow) and Type II (fast) — define your physical potential.","fibers",{"title":492,"description":493,"slug":494,"ref":494},"Flexion","Flexion is the anatomical movement that decreases the angle between two body segments. Opposite of extension.","flexion",{"title":496,"description":497,"slug":498,"ref":498},"Foam rolling","Foam rolling is a myofascial self-massage technique to release muscle tension. Find out how to use it effectively to improve recovery and mobility.","foam-rolling",{"title":500,"description":501,"slug":502,"ref":502},"For Time","For Time is a training format where you complete a fixed amount of work as fast as possible. Race against the clock.","for-time",{"title":504,"description":505,"slug":506,"ref":506},"Full Body","A full body program trains all major muscle groups in each session, 2-4 times per week. Ideal for beginners and strength training.","full-body",{"title":508,"description":509,"slug":510,"ref":510},"German Volume Training (GVT)","GVT is a high-volume hypertrophy scheme classically built around 10×10 on big lifts with short rests — very fatiguing.","german-volume-training",{"title":512,"description":513,"slug":514,"ref":514},"Glycogen","Glycogen is the storage form of carbohydrate in muscle and liver — the primary fuel for hard training.","glycogen",{"title":516,"description":517,"slug":518,"ref":518},"HIIT","HIIT (High-Intensity Interval Training) alternates short hard efforts with recovery to improve fitness and calorie burn in less time.","hiit",{"title":520,"description":521,"slug":522,"ref":522},"Hydration","Hydration is maintaining fluid balance for performance, cognition and recovery — water plus electrolytes when sweat losses are high.","hydration",{"title":524,"description":525,"slug":526,"ref":526},"Hypertrophy","Muscle hypertrophy is the increase in muscle fiber size. It's the primary mechanism behind muscle growth from resistance training.","hypertrophy",{"title":528,"description":529,"slug":530,"ref":530},"Hypertrophy Training","Hypertrophy training aims to maximize muscle growth using moderate loads (65-85% 1RM) with 8-15 repetitions per set.","hypertrophy-training",{"title":532,"description":533,"slug":534,"ref":534},"Intermittent fasting","Intermittent fasting restricts eating to time windows; fat loss still depends mainly on calorie balance and protein.","intermittent-fasting",{"title":536,"description":537,"slug":538,"ref":538},"Intra-workout","Intra-workout refers to nutrition consumed during training to maintain energy, hydration and performance on long sessions.","intra-workout",{"title":540,"description":541,"slug":542,"ref":542},"Isolation exercise","An isolation exercise targets mainly one joint and one muscle group (curl, lateral raise, leg extension) to add local volume or correct imbalances.","isolation-exercise",{"title":544,"description":545,"slug":546,"ref":546},"Isometric","Isometric contraction is when the muscle produces tension without changing length. No visible movement, intense work.","isometric-contraction",{"title":548,"description":549,"slug":550,"ref":550},"LISS","LISS (Low-Intensity Steady State) is continuous easy cardio at a conversational pace — useful for recovery, aerobic base and extra calorie burn.","liss",{"title":552,"description":553,"slug":554,"ref":554},"Lean bulk","A lean bulk is a slow, controlled surplus aimed at maximizing muscle gain while limiting fat gain.","lean-bulk",{"title":5,"description":294,"slug":13,"ref":13},{"title":557,"description":558,"slug":559,"ref":559},"Linear periodization","Linear periodization progresses from higher volume/lower intensity toward lower volume/higher intensity over weeks.","linear-periodization",{"title":561,"description":562,"slug":563,"ref":563},"Lipids (Fats)","Lipids are essential for hormone production and vitamin absorption. Discover your needs, the right sources and their role in bodybuilding.","lipids-fats",{"title":565,"description":566,"slug":567,"ref":567},"Macrocycle","A macrocycle is the global organization of your training over 3-12 months. The highest level of periodization, your annual game plan.","macrocycle",{"title":569,"description":570,"slug":571,"ref":571},"Macronutrients (Macros)","Macronutrients are the 3 main types of nutrients: proteins, carbohydrates and lipids. Their balance is crucial for performance and body composition.","macronutrients-macros",{"title":573,"description":574,"slug":575,"ref":575},"Maintenance","Maintenance is the calorie level at which your weight remains stable. The neutral baseline for any nutritional strategy.","maintenance",{"title":577,"description":578,"slug":579,"ref":579},"Mass gain","Mass gain (or bulk) is a controlled caloric surplus phase aimed at building muscle. Discover how to do it without gaining excess fat.","mass-gain",{"title":581,"description":582,"slug":583,"ref":583},"Meal timing","Meal timing is the strategic distribution of your meals around training and through the day to optimize performance and recovery.","meal-timing",{"title":585,"description":586,"slug":587,"ref":587},"Mesocycle","A mesocycle is a 4-8 week training block with a specific objective (hypertrophy, strength, peak, deload). The cornerstone of periodization.","mesocycle",{"title":589,"description":590,"slug":591,"ref":591},"Microcycle","A microcycle is the smallest planning unit in bodybuilding: generally 1 week of training. This is your weekly routine.","microcycle",{"title":593,"description":594,"slug":595,"ref":595},"Mind-muscle connection","Mind-muscle connection is the intentional focus on feeling the target muscle contract — useful for hypertrophy technique and isolation work.","mind-muscle-connection",{"title":597,"description":598,"slug":599,"ref":599},"Mobility","Mobility is the ability to actively control range of motion. Find out how to improve your mobility to optimize your performance.","mobility",{"title":601,"description":602,"slug":603,"ref":603},"Muscle failure","Muscle failure is the point where you cannot complete another clean rep with the target technique — RIR 0 / RPE 10.","muscle-failure",{"title":160,"description":605,"slug":606,"ref":606},"Muscle mass is the total weight of muscles in the body. Key indicator of strength, metabolism, and longevity.","muscle-mass",{"title":608,"description":609,"slug":610,"ref":610},"Muscular Endurance Training","Muscular endurance training develops the ability to sustain prolonged effort. Light loads, high reps, short rests.","muscular-endurance-training",{"title":612,"description":613,"slug":614,"ref":614},"Muscular endurance","Muscular endurance is a muscle's capacity to sustain repeated or prolonged contractions without excessive fatigue. Foundation of many sports.","muscular-endurance",{"title":616,"description":617,"slug":618,"ref":618},"Muscular strength","Muscular strength is the maximum force a muscle (or group) can produce. The fundamental physical quality of any athlete.","muscular-strength",{"title":620,"description":621,"slug":622,"ref":622},"Myo-reps","Myo-reps is an intensification method: an activation set near failure, then mini-sets with short rests to accumulate effective reps.","myo-reps",{"title":624,"description":625,"slug":626,"ref":626},"NEAT","NEAT is the energy you burn through all your daily activities outside of training. The most underestimated lever of your body composition.","neat",{"title":628,"description":629,"slug":630,"ref":630},"Omega-3 fatty acids","Omega-3 fats (EPA/DHA) support general health; in athletes they are discussed for recovery and inflammation — food first, then supplements if needed.","omega-3",{"title":632,"description":633,"slug":634,"ref":634},"Overreaching","Overreaching is a short-term performance drop from hard training that recovers with planned rest — unlike prolonged overtraining.","overreaching",{"title":636,"description":637,"slug":638,"ref":638},"Overtraining","Overtraining is a prolonged performance drop from excess stress without enough recovery — rarer than simple overreaching.","overtraining",{"title":640,"description":641,"slug":642,"ref":642},"PR - Personal Record","A PR (Personal Record) is your best performance ever on a movement. The fundamental progress marker.","pr-personal-record",{"title":644,"description":645,"slug":646,"ref":646},"Passive recovery","Passive recovery links on complete rest to allow the body to regenerate. Find out when and how to use it effectively.","passive-recovery",{"title":648,"description":649,"slug":650,"ref":650},"Periodization","Periodization is the cyclical organization of training into distinct phases to optimize progression, prevent plateaus, and avoid injuries.","periodization",{"title":652,"description":653,"slug":654,"ref":654},"Plateau","A plateau is a period of stagnation despite consistent training. Identifying the cause is the key to breaking it.","plateau",{"title":656,"description":657,"slug":658,"ref":658},"Post-workout","The post-workout is the nutrition right after training to optimize recovery and growth. Protein, carbs, hydration.","post-workout",{"title":660,"description":661,"slug":662,"ref":663},"Power (explosive strength)","Power is force × velocity — producing force quickly. Trained with intent, moderate loads moved fast, jumps/throws, and adequate rest.","power-training","power",{"title":665,"description":666,"slug":667,"ref":667},"Powerlifting","Powerlifting is a strength sport focused on maximal squat, bench press and deadlift — programming revolves around heavy compounds and peaking.","powerlifting",{"title":669,"description":670,"slug":671,"ref":671},"Pre-workout","The pre-workout is the meal or supplement taken before training to optimize performance. Energy, focus, and pump.","pre-workout",{"title":673,"description":674,"slug":675,"ref":675},"Progressive overload","Progressive overload is the foundational principle of training: gradually increasing the demand on your muscles to keep gaining strength and size.","progressive-overload",{"title":677,"description":678,"slug":679,"ref":679},"Protein","Protein is the essential macronutrient for building and repairing muscle. Discover your needs, the best sources and the optimal timing.","protein",{"title":681,"description":682,"slug":683,"ref":683},"Protein powder","Protein powders are concentrated protein supplements. Practical for hitting daily protein needs.","protein-powder",{"title":685,"description":686,"slug":687,"ref":687},"Push/Pull/Legs (PPL)","The Push/Pull/Legs program divides the workout into 3 types of sessions: push (chests/shoulders/triceps), pull (back/biceps) and legs. Optimal for all levels with frequency 2x/week per muscle.","push-pull-legs-ppl",{"title":689,"description":690,"slug":691,"ref":691},"RIR","RIR (Reps in Reserve) measures how many reps you have left before failure. Modern, intuitive tool to manage intensity.","rir-reps-in-reserve",{"title":693,"description":694,"slug":695,"ref":695},"RPE","RPE (Rate of Perceived Exertion) is a 1-10 scale to measure subjective effort. Essential tool for managing intensity.","rpe-rate-of-perceived-exertion",{"title":697,"description":698,"slug":699,"ref":699},"Range of motion (ROM)","Range of motion (ROM) is the amplitude through which a joint or muscle can move during an exercise. Crucial for hypertrophy and joint health.","range-of-motion-rom",{"title":701,"description":702,"slug":703,"ref":703},"Refeed","A refeed is a planned short increase in calories (often carbs) during a fat-loss phase to support training, hormones and adherence.","refeed",{"title":705,"description":706,"slug":707,"ref":707},"Repetitions (Reps)","A rep is one complete execution of an exercise. The rep range determines whether you primarily develop strength, hypertrophy, or muscular endurance.","repetitions-reps",{"title":709,"description":710,"slug":711,"ref":711},"Reps to failure (RTF)","RTF means performing reps until no clean rep remains; useful sparingly for hypertrophy, costly if overused on heavy compounds.","reps-to-failure",{"title":713,"description":714,"slug":715,"ref":715},"Rest","Rest between sets is critical and depends on the goal. Strength: 3-5 min. Hypertrophy: 1-3 min. Endurance: 30-60 sec.","rest",{"title":717,"description":718,"slug":719,"ref":719},"Rest day","A rest day is planned time off hard training so adaptation can occur; it can be full rest or very light activity.","rest-day",{"title":721,"description":722,"slug":723,"ref":723},"Rest-Pause","Rest-pause is an intensification method using ultra-short pauses to extend a set. Powerful tool for hypertrophy.","rest-pause",{"title":725,"description":726,"slug":727,"ref":727},"Sarcomere","The sarcomere is the basic contractile unit of muscle. Composed of actin and myosin, it produces all your movements.","sarcomere",{"title":729,"description":730,"slug":731,"ref":731},"Series (Sets)","A series (or set) is a group of consecutive reps without rest. The basic unit of training programming.","series-sets",{"title":733,"description":734,"slug":735,"ref":735},"Sleep","Sleep is the most underrated training variable. It's during sleep that recovery, muscle building, and hormonal regulation happen.","sleep",{"title":737,"description":738,"slug":739,"ref":739},"Split (Split program)","A split workout involves dividing muscle groups over different days. The classic split trains each muscle once a week for 5-6 days.","split-split-program",{"title":741,"description":742,"slug":743,"ref":743},"Strength Training","Strength training aims to develop maximal strength using heavy loads (80-95% of 1RM) with few repetitions (1-6 reps).","strength-training",{"title":745,"description":746,"slug":747,"ref":747},"Stretching","Stretching improves flexibility and range of motion. Learn about the different types and how to effectively incorporate them into your routine.","stretching",{"title":749,"description":750,"slug":751,"ref":751},"Superset","A superset chains two exercises with no rest between them. Time-efficient method that boosts intensity and density.","superset",{"title":753,"description":754,"slug":755,"ref":755},"TDEE","TDEE (Total Daily Energy Expenditure) represents your total daily energy expenditure. Find out how to calculate it precisely to optimize your results.","tdee",{"title":757,"description":758,"slug":759,"ref":759},"TUT - Time Under Tension","TUT (Time Under Tension) measures the total time the muscle is under load during a set. Key variable for hypertrophy.","tut-time-under-tension",{"title":761,"description":762,"slug":763,"ref":763},"Tabata","Tabata is a 4-minute HIIT protocol: 20 seconds max effort, 10 seconds rest, 8 rounds. Maximum efficiency in minimum time.","tabata",{"title":765,"description":766,"slug":767,"ref":767},"Tempo - Execution speed","Tempo is the controlled speed of each phase of a movement. Powerful tool to maximize stimulus and control.","tempo-execution-speed",{"title":769,"description":770,"slug":771,"ref":771},"Training density","Training density measures the amount of work done per unit of time. Increase it to boost intensity and metabolic stress.","training-density",{"title":773,"description":774,"slug":775,"ref":775},"Training frequency","Training frequency defines how many times per week you work a muscle. Discover the optimal frequency to progress.","training-frequency",{"title":777,"description":778,"slug":779,"ref":779},"Training intensity","Bodybuilding intensity measures the difficulty of the effort. Find out how to calculate it with % of 1RM, RPE, and RIR.","training-intensity",{"title":781,"description":782,"slug":783,"ref":783},"Training volume","Training volume represents the total amount of work performed. Discover the optimal volumes per muscle per week to progress.","training-volume",{"title":785,"description":786,"slug":787,"ref":787},"Type I muscle fibers","Type I fibers (slow-twitch) are endurance-oriented muscle fibers. Resistant to fatigue, they sustain prolonged efforts.","muscle-fibers-type-i",{"title":789,"description":790,"slug":791,"ref":791},"Type II muscle fibers","Type II fibers (fast-twitch) are powerful muscle fibers optimized for explosive efforts. Essential for strength and power.","type-ii-muscle-fibers",{"title":793,"description":794,"slug":795,"ref":795},"Undulating periodization","Undulating periodization varies volume and intensity frequently (daily or weekly) instead of long linear phases.","undulating-periodization",{"title":797,"description":798,"slug":799,"ref":799},"Upper/Lower","The Upper/Lower program divides training into upper body and lower body sessions over 4 days per week. Perfect balance between frequency (2x/week) and volume for all levels.","upper-lower",{"title":801,"description":802,"slug":803,"ref":803},"VO2 max","VO2 max is the maximum amount of oxygen your body can use during intense exercise. It's the gold standard of cardiovascular fitness.","vo2-max",{"title":805,"description":806,"slug":807,"ref":807},"Warm-up","A warm-up raises temperature, primes the nervous system and rehearses the session patterns before hard sets.","warm-up",{"title":809,"description":810,"slug":811,"ref":811},"Whey protein","Whey is a fast-digesting dairy protein powder, rich in leucine — a convenient way to hit daily protein targets.","whey-protein",{"title":813,"description":814,"slug":815,"ref":815},"Zone 2","Zone 2 is a moderate aerobic intensity (often ~60–70% HRmax) where you can talk in full sentences — foundation of endurance base.","zone-2",{"de":817,"en":13,"es":818,"fr":819,"it":820,"pt":820},"magermasse","masa-magra","masse-maigre","massa-magra",1785169298280]