An alcoholics behavior can change the behavor of everyone around him ,often forcing a friend or family member to hlp the alcohlic by protecting him or hiding the truth ?

Hey there!
Depending on how drunk the person is, that can be true. Although when a person is drunk they have no idea of what is going on, or what happened.

Hope I was able to help!

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)