Mark Ballas

Dancing with the Stars Champion; Mental Health Activist

Tom Voss

U.S. Army Combat Veteran, Mental Health & Holistic Healing Advocate; Featured in the Award-Winning Documentary "Almost Sunrise"

Montel Williams

Emmy Award-Winning Talk Show Host; Best Known For "The Montel Williams Show;" Multiple Sclerosis Activist

Montel Williams opens up about stroke with warning to others - CNN

Dr. Mehmet Oz

Renowned Doctor, Host of "The Dr. Oz Show," Professor of Surgery & Author

David Zinczenko

CEO of Galvanized Brands & Consulting Editorial Director of Men's Fitness

Chris Powell

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

Dr. Dean Ornish

Renowned Health, Diet & Nutrition Expert

Dr. Dean Ornish: Your genes are not your fate

Bob Harper

Fitness Expert, Author & Personal Trainer

The Super Carb Diet: Shed Pounds, Build Strength, Eat Real Food

Vince Papale

Former NFL Player & Inspiration for the Movie "Invincible"

Vince Papale reflects on Eagles' Super Bowl win

Chris Herren

Former NBA player & Founder of Hoop Dreams

Dan Abrams

Chief Legal Affairs Anchor, ABC News; Founder, Abrams Media

Man Down: Proof Beyond a Reasonable Doubt That Women Are Better Cops, Drivers, Gamblers...

Larry Komer, MD

Peak Performance Institute, Healthcare Innovation Expert

Lee Haney

Mr. Olympia, Author, Bodybuilder, Entrepreneur

Doug Oliver

Blindness To Sight -- Vision Restored By Stem Cells, Founder, The Regenerative Outcomes Foundation

Colton Haynes

Actor; Best Known for "Teen Wolf" and "Arrow"

Adam Garone

Former CEO of the Movember Foundation

Jay Olshansky

World-renowned Expert On Aging And Longevity With A Talent For Simplifying Complex Notions Of Human Health And Applying Them To Real-world Issues

David Nico

Author, Health Strategist, & Leadership Well-Being Expert

William Davis, MD

Cardiologist and Author of the #1 NY Times Bestseller Wheat Belly books

Peter Kraus

Former Bachelorette Contestant, Fitness & Body Building Coach