How hard you work during exercise, varying based on the type of exercise?

The FITT principle stands for:

Which principle involves gradually increasing the demands of a workout to continue making progress?

Which principle is best illustrated by a runner who incorporates hill sprints into their training to improve their speed and power?

The principle of periodization involves:

The physiological benefit of regular exercise that improves the efficiency of the heart and lungs is:

The principle that states that fitness gains will be lost if training is stopped is:

The principle that emphasizes the importance of rest and recovery in a training program is:

Refers to how many times you engage in any physical activity a week.

The component of the FITT principle that refers to the duration of a workout is: