The maximum amount of force that can be exerted by a muscle. Measured using what’s known as a One Rep Max (1RM).

The ability for the body to work for an extended amount of time.

A joint's ability to move through a full range of motion.

The percentages of fat, bone, water, and muscle in human bodies.

A principle of exercise that states that specific kinds of exercises must be done to develop specific aspects of the body and specific aspects of fitness. Only the specific muscle groups overloaded by exercise will respond and adapt.

The chronic overloading (exhausting) of muscles through exercise leads to them adapting to better perform that exercise.

A principle of exercise that states that a person should start slowly and increase exercise gradually. As your body adapts to training, your body progresses to a new fitness level.

Over time the body becomes accustomed to exercising at a given level.

When we stop exercising, the adaptations developed in response to exercise revert back to their original state.

Everyone’s body is different and adapts differently to exercise.

Physical activity or exercise done at a steady pace for an extended period of time so that the heart can supply as much oxygen as the body needs (e.g., walking, running, swimming, cycling).

Physical activity or exercise done in short, fast bursts so that the heart cannot supply oxygen as fast as the body needs (e.g., sprinting, weightlifting, football).

An exercise program, similar to an obstacle course, in which the person goes from one place to another doing a different exercise at each place.

An anaerobic exercise program that consists of runs of short distance or short bursts of exercise followed by rest.

The number of times an exercise is repeated.

A group of several repetitions.

Manner or style of performing a movement according to recognized standards of technique.

Checks the number of times your heart beats per minute (bpm).

A short, intense burst of exercise, usually carried out over a period of time that ranges from one to three minutes with a recovery phase between repetitions.

A brief, mild exercise that is done to get ready for more vigorous exercise. Gradually revs up your cardiovascular system by raising your body temperature and increasing blood flow to your muscles.

Brief, mild exercise or stretch done after vigorous exercise to help the body safely return to a resting state. Starts the recovery process, increases flexibility, and promotes relaxation.

Physical activity engaged in outside, most commonly in natural settings.

The minimum number of heartbeats in a given amount of time in order to reach the level of exertion necessary for cardiovascular fitness.

The heart pumping the lowest amount of blood you need.