I was lucky enough to go to Bora Bora a few years ago. I spent a few hours talking to a native and one of the things he said to me was, "we see someone who's skinny and we think, 'he must be lazy,' since there is plentiful food all around, fish, fruit, etc., and you just pick it up and eat." While their ceremonies and dances all relate to physical feats of prowess and strength. This seems to fit well with the hypothesis laid out in this article.