How do I get a girlfriend (not a boyfriend).

Be nice, treat her good don’t hurt her she’s fragile a lot of guys don’t understand that lately just treat her well and make her feel wanted, be there for her and ask about her day trust me it will most likely work..

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)

Idont understand what youre askimg