Generally, the notion right here is that there was a moment in humanity's evolution when we literally had to battle to survive. Though actual battle was surely aspect of living back in the Stone Age, i am also talking about the normal battle which was involved in just producing it to see one more sunset!
Walking, running, hiking, throwing rocks, pushing, pulling about, balancing, lifting, pressing - the checklist goes on and on. These things we did had been all a daily portion of life way back when the human physique was staying "programmed".
Compare that to the day to day activity degree of an regular person in a civilized culture, and what do you get? A major distinction between the way we had been constructed and the way we are really referred to as upon to execute! If you took your typical office employee in 2011 and threw them back in its history to a point when fur was "in", they possibly wouldn't last for extremely extended.