Devin Alexander

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

Sheena Iyengar

Columbia Business School Professor & Best-Selling Author of "The Art of Choosing"

Think Bigger: How to Innovate

Alice Waters

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

Art Smith

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

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

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

Ambassador Dennis Ross

Author, Counselor & William Davidson Distinguished Fellow at The Washington Institute; Former Special Assistant to President Obama

Peter Nielsen

Emmy Award-winning Host of the top rated Peter's Principles; Champion Bodybuilder; Celebrity Spokesperson for the Crohn's and Colitis Foundation

Nastia Liukin

Olympic Gold Medal Gymnast

Dan Ariely

Behavioral Economist; Professor at Duke University; Author; Founding Member of The Center for Advanced Hindsight

Laila Ali

Undefeated Four-Time World Champion Boxer & Lifestyle Expert; Heart Disease Awareness Advocate

Dr. Francis Collins

Director of the National Human Genome Research Institute

Rachael Ray

Chef, Author & Host of the "Rachael Ray Show"

Anne Wojcicki

Co-Founder & CEO of 23andMe

Mary Roach

TED Speaker & Author Known for "Packing For Mars"

Fuzz: When Nature Breaks the Law

Daniel Altman

Sports Analytics & Strategy Expert

Speaking Reel - Daniel Altman

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

Take Back Your Health - with Dr. Robert H. Lustig

Danny Cahill

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

Chris Powell

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