Which symptom indicates that someone has stress?
1.muscles become more relaxed
2.adrenaline decreases the sugar in the blood
3.the heart beat speeds up
4.the blood vessels contract

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.

To this question it will be choice one

Ithink it's traditional