Jeff Csatari

JEFF CSATARI is executive editor for Men's Health books and author of "The Belly Off! Diet, The Men's Health and Women's Health Big Book of Sex, "and co-author with David Zinczenko of "The New Abs Diet. "He lives in Bethlehem, PA. DAVID JACK is a Men's Health contributor and director of fitness and wellness for Teamworks Centers in New England.