Fitness Glossary: Every Term You Need to Know

As Many Reps (or Rounds) As Possible - a workout format where you perform maximum work in a set time.

Basal Metabolic Rate - the number of calories your body burns at complete rest just to stay alive.

Simultaneously losing body fat while gaining muscle mass, changing body composition without dramatic weight change.

Consuming fewer calories than your body burns, which is required for fat loss.

Consuming more calories than your body burns, used intentionally for muscle gain.

An exercise that works multiple muscle groups and joints simultaneously.

The two main phases of a rep: concentric (muscle shortening/lifting) and eccentric (muscle lengthening/lowering).

Delayed Onset Muscle Soreness - muscle pain that develops 24-72 hours after unfamiliar or intense exercise.

High-Intensity Interval Training - alternating between intense exercise bursts and recovery periods.

The increase in muscle cell size through resistance training, leading to bigger muscles.

An exercise that targets a single muscle group through movement at one joint.

Short for macronutrients: protein, carbohydrates, and fats that make up the caloric content of food.

Consciously focusing on contracting and engaging a specific muscle during exercise.

The maximum weight you can lift for a single repetition of an exercise with proper form.

Gradually increasing the stress placed on muscles over time to drive continued adaptation and growth.

Short for repetition - one complete movement of an exercise from start to finish.

A group of consecutive reps performed without rest.

Performing two exercises back-to-back with no rest between them.

Total Daily Energy Expenditure - the total calories your body burns in a day including all activity.

The total duration a muscle is under strain during a set, influenced by rep speed.