Quote Originally Posted by Kellen Bassette View Post
Wouldn't the same hold true then for high reps of weight lifting as well?

Well from my view, the reason is lost in modern times, the whole idea of staying in a stance a long time, is to be able to stay there efficiently, what that means if you stay long enough you will learn to hold yourself there with intention and your muscles will be relaxed. Something along that line, to long for muscles , find other stuff to hold you there.