WHAT THEY SAY:

"Gunnar Peterson works out up to nine clients a day at his Beverly Hills gym, and they're often a mix of pro athletes and movie stars. J-Lo says he's the best trainer she's ever had, Sly Stallone was so grateful for Peterson's help he cast the trainer in Rocky VI, and after Pete Sampras won the 2002 U.S. Open he gave Peterson a racquet signed THANKS FOR EXTENDING MY CAREER."

-Sports Illustrated