What trait is Lee demonstrating? Lee is always well groomed. He is very polite and well spoken. His coworkers, managers, and clients appreciate the way in which he presents himself. Lee is demonstrating . Please help Will give brainliest

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)