3.list the four principles of building fitness.

To make improvements in your fitness you need to overload your body. You need to stress or challenge the bodily system (aerobic/musculoskeletal) beyond what it is used to.

2) Specificity Principle

Your exercise program must be specifically related to your training goals.

4) Reversibility Principle

Not being as good as something as you used to.

you get into a car crash and die