Mario Lopez 'Extra Lean' bookSince his days as A.C. Slater on 'Saved by the Bell,' Mario Lopez has been known as a buff beefcake. Now, at 36, Lopez is sharing his secrets about staying lean and losing weight -- without heading to the gym -- in his latest book, 'Extra Lean'.

"This isn't a diet book. Diets don't work. This book explains why you shouldn't be scared or guilty about having food," Lopez tells PopEater. He promises that people can lose up to 14 lbs. in 14 days just by changing the food they consume. "The only exercise I focus on in the book is when to push away from the table. If you really want to lose weight, it's all about food."

Lopez tells us his secrets about healthy weight loss and also chats about how he's preparing for fatherhood. >>