Jessica Biel does a sexy photo shoot for Glamour UK's August issue.
"I'm not a perfect person who doesn't mess up, eat bad, not work out--I do all those things," Biel tells the magazine.
But her normal workout regimen is two or three days a week with a personal trainer, and exercise every day--whether she goes to the gym or does hiking or ballet. And no bread, dairy, sugar, salt or much meat when she is working. ("Oh, it's the worst!")
Biel also subscribes to the Kelly Bensimon method of a weekly six-day fast followed by a day of feasting.
"When I'm working and I eat healthily all week, I then give myself one day--usually Sunday--when I just eat what I want. You have to, otherwise your mind goes a little nutso," she said.