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Fitness Glossary

44 common training and fitness terms, explained in plain English. Tap any term for a quick definition and where to learn more.

AMRAP (As Many Reps As Possible)

BMR (Basal Metabolic Rate)

Body Recomposition

Bulking

Calorie Deficit

Calorie Surplus

Compound Exercise

Concentric (Lifting) Phase

Cutting

Deload Week

DOMS (Delayed Onset Muscle Soreness)

Drop Set

Eccentric (Lowering) Phase

EMOM (Every Minute On the Minute)

FFMI (Fat-Free Mass Index)

Hypertrophy

Interval Training

Isolation Exercise

Isometric Hold

Lean Body Mass (LBM)

Lifting Tempo

Macros (Macronutrients)

Mechanical Tension

MET (Metabolic Equivalent)

Mobility

One-Rep Max (1RM)

Periodization

Personal Record (PR)

PPL (Push/Pull/Legs)

Progressive Overload

Range of Motion (ROM)

RIR (Reps in Reserve)

RPE (Rate of Perceived Exertion)

Running Cadence

Superset

TDEE (Total Daily Energy Expenditure)

Tempo Run

Time Under Tension (TUT)

Training Split

Training to Failure

Training Volume

VO₂ Max

Warm-Up

Zone 2 Training

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