First, this is totally unrealistic. Even the most primitive humans dress for the climate. Next, it is totally exploitive. I don’t care what culture you come from, it is not ok to have your spouse sleep nude with someone else’s spouse. It is fine for adult pornography and belongs on a porno site. Anyone who lets their kids watch this is sick in the head.
It is a shame that the perverts ruined the discovery channel for my 11 year old. I guess all I can do is find out who the sponsors are and stop buying their products.