There was a rerun about the Spartans last night on PBS. Now there was a culture focused on health, beauty and the military (men and women).
Also, don't seem to recall any depictions of fat, overweight people on the walls of Egyptian tombs. Everyone looks really fit and trim.
There was little obesity in any ancient cultures since Doritos and TV had not been invented yet.
Actually, there was a BBC News article on that very subject a few months ago (sorry, no link.) From forensic examination of mummies, the wealthy Egyptians *were* fat, oftentimes. They had themselves painted as slim because that was their aesthetic ideal. The poor of course were slim or skinny.