Phil Davis

MMA who currently fights as a Light Heavyweight for the Ultimate Fighting Championship

Jen Selter

Fitness Personality & Instagram Celebrity

Robert H. Lustig

Endocrinologist, Professor of Pediatric Endocrinology, New York Times Bestselling Author

Danny Cahill

The BIGGEST "The Biggest Loser." Lost 236 pounds in less than 7 months!

Dr. William Li

Physician, Scientist & Bestselling Author of “Eat to Beat Disease: The New Science of How Your Body Can Heal Itself” and “Eat to Beat Your Diet: Burn Fat, Heal Your Metabolism, and Live Longer”

Dr. Francis Collins

Head, Molecular Genetics Section, National Human Genome Research Institute; 16th Director, National Institutes of Health

Dr. Francis Collins: "I don't see a conflict" between science and faith ...

Chris Powell

Trainer and Transformation Specialist on ABC's "Extreme Makeover: Weight Loss Edition"

Daniel Altman

Sports Analytics & Strategy Expert

Risa Lavizzo-Mourey

Healthcare Expert and President Emerita of the Robert Wood Johnson Foundation

Dr. Zorba Paster

Physician & Radio Show Host

Devin Alexander

New York Times Bestselling Author, Celebrity Chef Known For "Biggest Loser"

Anne Wojcicki

Co-Founder & CEO of 23andMe

Keri Glassman

Nutritionist, Author, Founder and CEO of Nutritious Life

Mary Roach

TED Speaker & Author Known for "Packing For Mars"

David Cutler

Harvard Professor of Applied Economics & Author

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Dr. Ian Smith

Doctor, New York Times Bestselling Author, Medical Contributor & Host of "The Doctors"

Art Smith

Celebrity Chef, Author & Humanitarian; Served as the Personal Chef of Oprah Winfrey

Richard Simmons

Fitness Instructor, Actor, Video Producer Known for "Sweatin' to the Oldies" Aerobics Videos

David Satcher, M.D., Ph.D.

16th US Surgeon General; Founding Director of the Satcher Health Leadership