Someone who knows how to draw draws for me and sends me please, I don't know what to do. You will trace 10 muscles and 10 bones and label them on a piece of paper.

Anxiety, stress, or something like that

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)

What do you mean exactly