Which is not a risk factor for violence? availability of weapons memberships in gangs poverty the fight-or-flight response description

I would say that it is fight or flight response.

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)

That is pretty