Art Smith

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

Oprah and Chef Art Smith Invent a Grilled Tomato and Bell Pepper Soup

Joan Lunden

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

Bob Harper

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

Health, Fitness Expert Bob Harper on life after heart attack

Sherri Shepherd

Actress & Comedian; Former Co-host of "The View"

Sherri Shepherd Heads to Netflix

Kristie Alley

Actress, Spokesmodel, Known for "Cheers"

Kirstie Alley's Weight Loss

Jillian Michaels

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

Jillian Michaels at the First Health Matters

Chris Ruden

World’s Strongest Amputee & Type 1 Diabetic

Trisha Yearwood

Country Music Artist, Two-Time New York Times Best-Selling Cookbook Author

Robert H. Lustig

Professor of Pediatrics & Director of the Weight Assessment for Teen and Child Health (WATCH) Program at UCSF, New York Times Best-Selling Author of "Fat Chance: Beating the Odds Against Sugar, Processed Food, Obesity, and Disease"

Robin Miller

Host of "Quick Fix Meals with Robin Miller" on Food Network, Nutritionist

Jennifer Widerstrom

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

Ron Lester

Comedic Actor Best Known for his Role in "Varsity Blues"; Speaker on Weight Loss and Advocate of U.S. Troops

Graham Elliot

Celebrity Chef & Restaurateur; Judge on Bravo's "Top Chef"

Graham Elliot Gets A Taste Of Citi Field

Jessie Pavelka

One of the New Trainers on NBC’s "The Biggest Loser"

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"

Chris Powell

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

Wynonna Judd

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

Ellie Krieger

Dietitian, Best-selling Author & Television Host

Whole in One: Complete, Healthy Meals in a Single Pot, Sheet Pan, or Skillet

Paula Zahn

Distinguished News Anchor & Nine-Time Emmy Award Winner