What is the primary reason the body needs nutrients? to aid in new growth
to reduce oxygen in the body
to help wounds heal slowly
to fight bacterial infections

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.

Why don't give me a problem to work with and i will you with the problem