Term of the Day
Training
AMRAP (As Many Reps As Possible)
"A set performed to technical failure, repping until you cannot continue."
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Issue No. 02 / The Fitness Dictionary
FITNESS
DICTIONARY
Every term that actually moves the needle. 80 plain English definitions for training, nutrition, recovery, and supplements. No fluff, no jargon, no bro science. Built for lifters who want the truth in two sentences.
80
Terms
06
Categories
A–Z
Indexed
know the words, run the game
Showing 80 of 80
1
01 term
5
01 term
A
03 terms
- Recovery
Active Recovery
Low-intensity movement on off days to promote blood flow and recovery.
Read Term - Training
AMRAP (As Many Reps As Possible)
A set performed to technical failure, repping until you cannot continue.
Read Term - Training
Autoregulation
Adjusting daily training based on how you feel, using tools like RPE or velocity.
Read Term
B
06 terms
- Anatomy
Back Muscles
The muscles of the upper and lower back that drive pulling and spinal support.
Read Term - Supplements
BCAA (Branched-Chain Amino Acids)
Leucine, isoleucine, and valine — three amino acids marketed for muscle recovery.
Read Term - Supplements
Beta-Alanine
A non-essential amino acid that buffers acid in muscle, delaying fatigue.
Read Term - Nutrition
Body Recomposition
Losing fat and gaining muscle simultaneously, usually at maintenance calories.
Read Term - Training
Bodybuilding
Training and dieting specifically to maximize muscle size, symmetry, and leanness.
Read Term - Nutrition
Bulking
A muscle-building phase eaten in a slight calorie surplus paired with progressive overload.
Read Term
C
10 terms
- Nutrition
Caloric Deficit
Eating fewer calories than you burn, causing fat loss.
Read Term - Nutrition
Caloric Surplus
Eating more calories than you burn, supporting muscle growth.
Read Term - Cardio
Cardio Zones
Heart-rate ranges used to target specific aerobic adaptations.
Read Term - Supplements
Citrulline Malate
An amino acid that boosts nitric oxide, improving blood flow and endurance.
Read Term - Recovery
Cold Therapy
Ice baths, cold showers, or cryotherapy used to reduce inflammation and soreness.
Read Term - Training
Compound Lift
A multi-joint exercise that trains several muscle groups at once.
Read Term - Training
Concentric
The shortening phase of a rep, where the muscle contracts to move the load.
Read Term - Anatomy
Core
The muscles that stabilize the spine and pelvis — abs, obliques, lower back, and deep stabilizers.
Read Term - Supplements
Creatine
The most-researched supplement, proven to increase strength and muscle volume.
Read Term - Nutrition
Cutting
A deliberate fat-loss phase eaten in a calorie deficit while training hard to preserve muscle.
Read Term
D
04 terms
- Recovery
Deload
A planned light week to recover from accumulated training fatigue.
Read Term - Anatomy
Deltoids
The three heads of the shoulder muscle — front, side, and rear.
Read Term - Recovery
DOMS (Delayed-Onset Muscle Soreness)
Muscle soreness peaking 24–72 hours after an unfamiliar or hard workout.
Read Term - Training
Drop Set
Reducing weight mid-set to extend the set past initial failure.
Read Term
E
01 term
F
06 terms
- Training
Fasted Training
Lifting on an empty stomach, usually first thing in the morning.
Read Term - Nutrition
Fiber
The indigestible carbohydrate that supports digestion, satiety, and metabolic health.
Read Term - Recovery
Foam Rolling
Self-massage using a foam cylinder to release muscle tension and improve mobility.
Read Term - Training
Form / Technique
The specific body position and movement pattern used to perform an exercise.
Read Term - Training
Form Failure
The point in a set where you cannot perform another rep with correct technique.
Read Term - Training
Functional Training
Exercises that mimic real-world movement patterns and improve everyday performance.
Read Term
G
02 terms
H
04 terms
- Anatomy
Hamstrings
The three muscles on the back of the thigh that extend the hip and flex the knee.
Read Term - Cardio
HIIT (High-Intensity Interval Training)
Short, all-out efforts alternated with brief rest periods.
Read Term - Nutrition
Hydration
Maintaining adequate fluid balance for performance, recovery, and health.
Read Term - Training
Hypertrophy
The growth of muscle fiber size in response to resistance training.
Read Term
I
03 terms
- Training
Intensity
How heavy a weight is relative to your maximum — usually expressed as % of 1RM.
Read Term - Nutrition
Intermittent Fasting (IF)
An eating pattern that cycles between fasting and feeding windows.
Read Term - Training
Isolation Exercise
A single-joint movement that targets one muscle group.
Read Term
L
03 terms
- Anatomy
Lats (Latissimus Dorsi)
The large back muscles that pull the arm down and in — key for the V-taper look.
Read Term - Nutrition
Leucine
The branched-chain amino acid that triggers muscle protein synthesis.
Read Term - Cardio
LISS (Low-Intensity Steady State)
Long, easy cardio sessions at a conversational pace — typically walking or light cycling.
Read Term
M
09 terms
- Nutrition
Macros (Macronutrients)
Protein, carbs, and fat — the three nutrients that supply calories.
Read Term - Nutrition
Meal Prep
Preparing meals in advance to ensure consistent nutrition throughout the week.
Read Term - Training
Metabolic Stress
The burn and pump from accumulating lactate and metabolites in a working muscle.
Read Term - Nutrition
Micronutrients
Vitamins and minerals required in small amounts for health, energy, and performance.
Read Term - Training
Mind-Muscle Connection
Consciously focusing on the target muscle to improve activation during a lift.
Read Term - Recovery
Mobility
Active control of a joint through its full range of motion.
Read Term - Nutrition
Muscle Protein Synthesis (MPS)
The biological process of building new muscle tissue from dietary protein.
Read Term - Training
Muscular Failure
The point at which a muscle cannot complete another full rep, even with maximum effort.
Read Term - Training
Myo-Reps
An efficient rest-pause method for building volume quickly on isolation exercises.
Read Term
N
01 term
O
01 term
P
07 terms
- Training
Periodization
Structuring training into planned cycles of volume and intensity to peak at the right time.
Read Term - Anatomy
Posterior Chain
The muscles along the back of your body — glutes, hamstrings, lower back, and upper back.
Read Term - Training
Powerlifting
A strength sport focused on the squat, bench press, and deadlift.
Read Term - Supplements
Pre-Workout
A supplement taken before training to boost energy, focus, and pump.
Read Term - Training
Progressive Overload
Gradually increasing training demand to force ongoing adaptation.
Read Term - Nutrition
Protein Intake
How much protein you eat per day, the most important macro for muscle.
Read Term - Training
Pull-Up
A bodyweight pulling exercise where you lift your chin above a bar from a dead hang.
Read Term
Q
01 term
R
06 terms
- Training
Range of Motion (ROM)
How far a joint travels through a rep — full ROM trains the muscle hardest.
Read Term - Nutrition
Refeed
A planned high-carb day during a cut to restore glycogen and leptin.
Read Term - Training
Rest Period
The time between working sets, which controls recovery and training intensity.
Read Term - Nutrition
Reverse Diet
Gradually increasing calories after a cut to restore metabolism without rapid fat regain.
Read Term - Training
Romanian Deadlift (RDL)
A hip-hinge exercise that stretches the hamstrings under load with minimal knee bend.
Read Term - Training
RPE (Rate of Perceived Exertion)
A 1–10 scale of how hard a set felt, used to autoregulate training.
Read Term
S
03 terms
T
05 terms
- Nutrition
TDEE (Total Daily Energy Expenditure)
The total calories you burn in a day, including training and daily activity.
Read Term - Training
Tempo
The prescribed speed of each phase of a rep, written as four numbers.
Read Term - Training
Time Under Tension (TUT)
The total seconds a muscle is loaded during a set.
Read Term - Training
Training Split
How muscle groups are distributed across the week's workouts.
Read Term - Training
Training Volume
The total work performed in a session or week — usually sets × reps × weight.
Read Term
V
01 term
W
02 terms
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