No pain, no gain, no idea what half these terms mean.
Short for repetitions — the number of times you perform an exercise before collapsing into an existential heap on the gym floor. The correct number of reps is always "one more" according to every training partner who has ever lived.
A day designated for recovery that gym addicts spend feeling guilty about not being at the gym. It's medically necessary and psychologically torturous, like being told you have to take a day off from your obsession.
The time between workouts where the actual muscle growth happens, which gym addicts treat as an annoying interruption to their lifting schedule. It involves sleep, nutrition, and the emotional maturity to accept that rest is productive.
An intensity technique where you perform reps to failure, rest briefly (10-15 seconds), then squeeze out more reps with the same weight. Torture disguised as a training method.
A dangerous condition where muscle breakdown releases proteins into the bloodstream, potentially causing kidney damage. The universe's way of saying 'too much, too soon' with medical severity.
The distance a joint moves during an exercise, abbreviated ROM. Full ROM builds muscle and flexibility; partial ROM builds ego and Instagram content.
In sports and fitness contexts, the strategic act of consuming food and drink post-workout to replenish glycogen stores and promote muscle recovery. What used to be called "eating lunch" now sounds like you're maintaining a fighter jet. Fitness influencers have turned this into a pseudo-science involving precise macronutrient ratios and $40 protein powders.
A subjective scale (usually 1-10 or 6-20) used to measure how hard you feel you're working during exercise. Science's way of asking 'but how do you *feel* about that?' to your cardiovascular system.
A planned day of increased carbohydrate intake during a diet to restore glycogen and leptin levels, theoretically. In practice, it's the diet loophole that turns into psychological warfare between your meal plan and your pantry.
Resting Metabolic Rate: the number of calories your body burns just existing in a chair, doing nothing but maintaining life functions. It's the baseline caloric cost of your meat prison before you add actual activity, typically measured first thing in the morning.
Rate of Perceived Exertion—a subjective 1-10 scale measuring how hard you're working based on feel rather than numbers. It's like rating your life stress, but for deadlifts.
Patellofemoral pain syndrome causing pain around the kneecap, typically from overuse or biomechanical issues. The injury that makes runners question their life choices while still planning their next run.
A method of quantifying training intensity by estimating how many more repetitions you could complete before failure, abbreviated as RIR. For people who think RPE isn't confusing enough.
The euphoric state experienced during or after prolonged running, caused by endocannabinoid and endorphin release. Non-runners remain skeptical this exists, while runners evangelically insist it's worth the joint damage.
A training technique where you perform a set to failure, rest briefly (10-30 seconds), then continue for additional reps. It's the workout equivalent of a horror movie where the monster keeps coming back just when you thought it was over.
How quickly you can generate maximum force, essentially your muscles' 0-60 time. Critical for explosive athletes and completely ignored by people who think lifting slowly is somehow superior for building strength.
The target number of repetitions prescribed for a set, theoretically corresponding to specific adaptations. 1-5 for strength, 6-12 for hypertrophy, 15+ for endurance - or so the legend goes.
The optimal body weight at which an athlete performs best in competition, achieved through careful manipulation of body composition. The number on the scale that justifies months of dietary suffering.
Shortened term for rhabdomyolysis, the catastrophic muscle breakdown that releases proteins into your bloodstream and can destroy your kidneys. When someone tells you they got rhabdo from a workout, they went from fitness enthusiast to medical emergency in record time.
"As prescribed"—completing a workout exactly as written without scaling weight, reps, or movements. In CrossFit culture, it's a badge of honor and humble-brag opportunity.
Rate of Perceived Exertion—a subjective 1-10 scale measuring how hard you're working, allowing coaches to program training intensity while you lie to yourself about whether that was really a 7 or secretly a 5.
The painful skin abrasions resulting from sliding across pavement during a cycling crash. Nature's reminder that Lycra provides minimal protection against concrete.
The target speed you aim to maintain during a competition, typically practiced in training to build familiarity and confidence. Hope disguised as a number.
How quickly your heart rate drops after intense exercise, indicating cardiovascular fitness. A fast recovery means you're fit; a slow one means you should probably do more cardio and less online shopping during workouts.