Jessie Pavelka

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

Bianca Peyvan

The Nutritionista, a Los Angeles-based Registered Dietitian

Danny Cahill

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

Tory Johnson

Founder and CEO, Women For Hire; Author, "The Shift"; Weekly Contributor, "Good Morning America"

Paula Zahn

Distinguished News Anchor & Nine-Time Emmy Award Winner

Carnie Wilson

Singer & Actress, Founding Member of "Wilson Phillips"

John Sweeney

Inspiring Innovation at the Speed of Laughter

Richard Simmons

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

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Sherri Shepherd

Actress & Comedian, Former Co-host of "The View"; Host, "Two Funny Mamas" Podcast

Jillian Michaels

Leading Fitness Expert, Certified Nutritionist, Renowned Life Coach & Powerful Entrepreneur

Joan Lunden

Award-Winning Journalist, Bestselling Author & Health and Wellness Advocate

Wynonna Judd

Grammy-Winning Country Superstar, Author and Contestant on "Dancing With the Stars"

Bob Harper

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

Kate Gosselin

Television Personality and Author Known For Her Reality Series "Kate Plus 8"

Valerie Bertinelli

Actress & Jenny Craig Brand Ambassador; Starred in Sitcom "Hot in Cleveland"

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Anthony Anderson

Actor, Producer, Comedian, Writer & Game Show Host, Best Known for ABC’s "Black-ish"

Scott Schmaren

Neuro-Performanceologist, Hypnotist, Coach & Author

Chris Ruden

World’s Strongest Amputee & Type 1 Diabetic

Anita Vreugdenhil

Pediatric Gastroenterologist Specializing in Childhood Obesity

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Robert H. Lustig

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