Haylie Pomroy

Celebrity Nutritionist, Wellness Consultant and Author of "The Fast Metabolism Diet"

Candice Kumai

Chef & Best-Selling Author; Former TV Host & Model

Jessie Pavelka

Fitness Expert; Former Television Host on NBC’s "The Biggest Loser"

Emma Lovewell

Peloton Instructor, Under Armour Athlete, Health & Wellness Expert

Kris Carr

Author; Cancer Survivor; Founder of crazysexylife.com

Bob Harper

Personal Trainer & Former Host of "The Biggest Loser;" Heart Attack Survivor

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Derek Hough

Dancer, NYT Bestselling Author, Emmy Award Winner for Outstanding Choreography & Six-Time Champion of ABC's "Dancing with the Stars"

Jennifer Widerstrom

Newest Trainer on "The Biggest Loser;" Former Star of NBC’s "American Gladiators"

Brooke Shields

Actress; Model; Women's Health, Aging & Mental Wellness Advocate

Chris Dancy

Futurist, Technology Expert & “The Most Connected Man on Earth”

Alicia Silverstone

Actress & Animal Rights Activist

Dan Harris

Award-Winning ABC News Anchor & #1 New York Times Best-Selling Author

Randy Jackson

Music Producer, Former "American Idol" Judge, Author & Health Advocate

Jennifer B. Wallace

Award-Winning Journalist, Television Presenter & Author

Charlene Strong

Gay Rights Activist

Marcus Luttrell

Decorated Navy SEAL & Bestselling Author of "Lone Survivor"

Jack Falahee

Actor Known for "How to Get Away with Murder" & "Mercy Street"

Arnold Schwarzenegger

Actor, Producer, Director, Writer; California’s 38th Governor; Host of "Celebrity Apprentice"

Charity Dean

CEO & Founder at PHC Global

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Dr. Holly Phillips

CBS Health Contributor