true or false: the skeletal motor systems are under voluntary control and is part of the somatic system.

Yes you do , which is cool

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)

True is the correct answer