Well, I do crunches with weights & I've had amazing results. I will never give them up.
As far as flies go, yes they work a very small part of the chest--not the part that gives you cleavage, but the part that keeps you "lifted." IMO flies are essential to help prevent sagging.
As far as flies go, yes they work a very small part of the chest--not the part that gives you cleavage, but the part that keeps you "lifted." IMO flies are essential to help prevent sagging.