Mens Health has a great piece on the lengths the actors took to get ripped for the movie 300.
This from the article:
“One actor from 300, Andrew Pleavin, completed the workout in 18 minutes,11 seconds,” says Ballantyne. “He didn’t practice this workout…and neither did I. My time? 19:07. My butt was kicked by a Hollywood actor!”
“It’s a brutal workout, starting out strong and slowing down, finishing at a crawl,” explains Ballantyne. “I don’t plan on doing that any time soon or, really, ever again.”
All exercises are done without scheduled rest between moves. Obviously this is an advanced workout…you shouldn’t do it unless you are already in great shape.