In Balance, when we do bridge pose, on the videos it always explicitly explains that we must squeeze our buttocks while lifting up.
However I once had a PT client that used to do pilates who said to me that they explicitly state to NOT squeeze the buttocks.
Yesterday I participated in a pilates class where the instructor also said not to squeeze the buttocks in bridge pose and to try and relax the muscles.
So my question is, why is this taught differently between the 2 programs?