Joan Lunden

Award-Winning Journalist, Best-Selling Author and Health and Wellness Advocate

Jillian Michaels

Health Fitness Guru on NBC's hit series "The Biggest Loser."

Chris Ruden

World’s Strongest Amputee and Type 1 Diabetic

Chris Ruden: Powerlifter Playing Bodybuilder For a Day - YouTube

Sherri Shepherd

Co-host of ABC's "The View"; Actress and Comedian

Bob Harper

Fitness Expert, Author and Personal Trainer

Kris Jenner

Reality TV Star & Executive Producer of "Keeping Up with the Kardashians"

Robert H. Lustig

Bestselling Author of Fat Chance

Drew Canole

Founder and CEO of Fitlife.tv

Susan Albers, Psy.D.

Best-selling Author; Clinical Psychologist at the Cleveland Clinic; Specialist in Eating Issues, Weight Loss, & Body Image

Jayson Calton, Ph.D.

Co-Founder of Calton Nutrition, Co-Author of "Naked Calories," "Rich Food Poor Food" & "The Micronutrient Miracle"

Mira Calton

Co-Founder of Calton Nutrition, Co-Author of "Naked Calories," "Rich Food Poor Food" & "The Micronutrient Miracle"

Jay Cardiello

Fitness and Nutrition Expert

Jennifer Nicole Lee

Fitness Expert/Model; Author of "The Fitness Model Diet" and "The Mind Body and Soul Diet"

Tory Johnson

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

Richard Simmons

Health & Fitness Guru

Ellie Krieger

Registered Dietitian, Author, Host of The Food Network's "Healthy Appetite"

Kate Gosselin

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

Jo Frost

Jo Frost is an English nanny and the central figure of the reality television programme Supernanny, of which there is both a British and an American version.

Valerie Bertinelli

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

Kirstie Alley

Film and TV Actress; "Cheers" and "Look Who's Talking"