Arnold Schwarzenegger

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

Michael J. Fox

Actor, Author and Advocate; Founder, The Michael J. Fox Foundation for Parkinson’s Research

Michael J. Fox on latest Parkinson's research and how he's ...

Bill Maher

Political Satirist & Host of HBO's "Real Time"

Bobby Flay

Chef & Host of "Throwdown With Bobby Flay" and "America's Next Great Restaurant"

Cynthia Nixon

Actress Known for her Role as Miranda Hobbes on HBO's "Sex and the City"; Former Candidate for Governor of New York

Rosie O'Donnell

Comedian, Actress, Author & Television Personality

Deepak Chopra

Co-Founder of The Chopra Center for Wellbeing

Mayim Bialik

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

Tim Ferriss

Angel Investor & Author of "The 4-Hour Workweek"

Hoda Kotb

Award-Winning Broadcast Journalist, Television Personality, Author & Co-Anchor of NBC News' TODAY

Marlo Thomas

Emmy Award-Winning Actress, Social Activist & Presidential Medal of Freedom Recipient

Biz Stone

Co-Founder of Twitter

Bret Michaels

Singer-Songwriter, Musician & Reality Television Personality

Anne Wojcicki

Co-Founder & CEO of 23andMe

Christy Turlington Burns

Model & Founder of Every Mother Counts; Anti-Smoking Activist

John Mackey

Co-Founder & CEO, Whole Foods Market

Ice-T

Rapper, Record Producer & Actor Known for "Law & Order: SVU"

Ken Dychtwald

Founder & CEO of Age Wave; Gerontologist & Expert on Aging-Related Issues

Phylicia Rashad

Actress, Dean of Fine Arts at Howard University, Advocate for Children, Women's Issues & Fine Arts

Dan Ariely

Behavioral Economist; Professor at Duke University; Author; Founding Member of The Center for Advanced Hindsight

Jillian Michaels

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

Diana Nyad

World Champion Swimmer, Storyteller, Sports Journalist & Broadcaster

John Stossel

Emmy-Award Winning Journalist

Dr. William Li

Physician, Scientist & Bestselling Author of “Eat to Beat Disease: The New Science of How Your Body Can Heal Itself” and “Eat to Beat Your Diet: Burn Fat, Heal Your Metabolism, and Live Longer”

Jodie Sweetin

Entrepreneur, Actress, Producer & Author

Deborah Norville

Two-Time Emmy Award-Winning Journalist; Anchor of "Inside Edition" & Best-Selling Author

Marlee Matlin

Academy Award Winning Actress; Healthcare Advocate & Disability Rights Activist Fighting for Better Access for the Deaf

Mike Walsh

CEO of Tomorrow, Futurist & Best-Selling Author of "The Algorithmic Leader"

Dr. Drew Pinsky

Physician, Addiction Medicine Specialist, TV Host, Author & Podcaster

Jeffrey Pfeffer

Thomas D. Dee II Professor of Organizational Behavior at the Graduate School of Business, Stanford University