Discuss the importance of life style choices, nutrient requirements, and everyday food choices to maximize bone mass.

Life style choices include things that will not injure your bones, nutrient requirements would be lots of calcium and food that has calcium in it

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)