Barbara J. Rolls

is Professor of Nutritional Sciences and the Helen A. Guthrie Chair in Nutrition at The Pennsylvania State University.   read more...

 Jack LaLanne

is an American fitness, exercise, and nutritional expert, celebrity, lecturer, and motivational speaker who is widely referred to as "The Godfather of Fitness".   read more...

 Kathy Smith

With over 16 million workout videos sold since 1980, Kathy Smith has become a household name in fitness.   read more...