Side Effect: Skinny

Guest Bio: Denise Austin

Known as "America's favorite fitness expert," Denise Austin has sold over 24 million exercise videos and authored more than 12 books on health and fitness. As a worldwide fitness phenomenon, she has created a loyal audience with her two major television shows: Getting Fit, which ran for 10 years on ESPN and continued under the new name Denise Austin's Daily Workout, and Fit & Lite, both on Lifetime.

Denise served two terms on the President's Council on Physical Fitness and Sports. She has testified before the U.S. Senate Committee on Health, Education, Labor, and Pensions, helped launch the new food guidance system of the U.S. Department of Agriculture, and was recently honored by Woman's Day magazine and the American Heart Association with the Red Dress Award for her contributions to heart health. Married for over 25 years to Jeff Austin, she has two college-aged daughters, Kelly and Katie.