Nudity is the most natural of human appearances. It is simply…beautiful.
There is no shame and there should never be any shame made or given in one being nude or in being seen nude. One also should never assume the sexual orientation of any single person or of any two or more nude men or women seen together at play, in exercise or in sports training form.
This video is a small example of the beauty of nudity in action. It is two men training for a fight. The video (which runs 9:44) is shot in slow motion and takes place on a deserted beach.