When you exercise, which of the following can provide you with a feeling of peace and happiness?

select one:

a. adrenaline
b. endorphin
c. morphine
d. oxygen

When you exercise, which of the following can provide you with a feeling of peace and happiness?
b. Endorphin

Endorphin is the happy chemicals :)

Well you see if you dont follow ur parent's expectations or rule you're going to get a beat

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)