Mayim Bialik

Neuroscientist, Mental Health Advocate & Actress Known for "The Big Bang Theory"

Daphne Oz

Emmy Award-winning Television Host, New York Times Bestselling Author, Chef & Entrepreneur

Dr. Ian Smith

Doctor, New York Times Bestselling Author, Medical Contributor & Host of "The Doctors"

Joe Pantoliano

Emmy Award-Winning Actor & Film Producer; Mental Health Advocate

Dr. Mehmet Oz

Cardiothoracic Surgeon; Host of "The Dr. Oz Show;" Columbia University Professor & Author

DJ Pauly D

DJ and Former Cast Member of MTV's "The Jersey Shore"

Clinton Kelly

Host of ABC's "The Chew"

Daymond John

"Shark Tank" Investor; Founder & CEO of FUBU; Presidential Ambassador for Global Entrepreneurship

Bob Harper

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

Maintaining A Healthy Body & Mind | Bob Harper Q&A

Richard Dreyfuss

Academy Award-Winning Actor

Anderson Cooper

Journalist, TV Personality, Anchor of CNN's "Anderson Cooper 360°"

Danny Boome

Star of Food Network's "Rescue Chef"

Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

"Boston Rob" Mariano

Reality Star of Survivor & Amazing Race

Elizabeth Cohen

Senior Correspondent for the CNN Health, Medical, & Wellness Unit

Elizabeth Cohen - CNN news story on baby formula shortage

Mike Sorrentino

Star of ‘Jersey Shore’ & Recovering Drug Addict

Montel Williams

Emmy Award-Winning Talk Show Host; Multiple Sclerosis Survivor; Health Equity & Veteran Advocate

Richard Simmons

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

Bob Schieffer

Former Moderator of “Face The Nation” & Chief Washington Correspondent for CBS News

Matt Roloff

Star of "Little People, Big World"

John Ratzenberger

Emmy-Nominated Actor, Entrepreneur & Philanthropist

Alvin Poussaint

Psychiatrist, Media Consultant & Author

A.J. Jacobs

Best-Selling Author & "Human Guinea Pig"

The Year of Living Constitutionally: One Man's Humble Quest to Follow the Constitution'...

David Feherty

Golf Commentator for LIV Golf; TV Host, Bestselling Author & Former PGA Tour Pro

Michael Emerson

Award-Winning Actor, Lost

Cat Cora

World-Renowned Chef, Author, Restaurateur, Contributing Editor, Television Host, Actress, Avid Philanthropist, Health and Fitness Expert & Lifestyle Entrepreneur

Sammi Giancola

Reality TV Star on MTV's "The Jersey Shore"

Justine Simmons

Motivator & Philanthropist

Jurnee Smollett

Actress & Singer

Omarosa Manigault Newman

Former Contestant on "Celebrity Apprentice"