What are two steps you can use to analyze influences

Evaluate how the influences might affect your health behavior and decisions and identify people and things that might influence you

Magnesium! this is found if caves usually

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)