My old boss was super into the body building and iron man type stuff. The office was littered with his vitamin supplements and he tried to pressure the entire staff into buying into a gym membership plan, and made me feel like some kind of lazy slob for not having the time to work out when I was doing 50 hour weeks and caring for my 6 month old (obviously this was not a teaching job -- I worked for a dotcom when I first moved to BJ). It was super annoying, and his obsession with the body stuff was a bit weird.
So do the Chinese bodybuilders also go in for the tanning then? Your friend looks pretty dark LE, but I guess tans do show off the musles more so the sun-fearing Chinese are outta luck.