Which statement by a registered nurse (RN) represents appropriate delegation to a nursing assistant? "
a) Inspect the site for thrombophlebitis.
b) Discontinue the IV solution.
c) Check the infusion rate.
d) Dispose of the disconnected IV set.

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)