Barbara J. Rolls

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

 Denise Austin

is a pioneer in the exercise and sports industry. A five-foot-four-inch dynamo, she has sold more than 20 million exercise videos and DVDs, authored 10 books on fitness, and starred in the longest running fitness show in the history of television.   read more...

 Ali Vincent

was the winner on Season 5 of TV's most popular reality show, The Biggest Loser.   read more...