Michelle Gielan

Former National CBS News Anchor Turned Positive Psychology Researcher; Bestselling Author of "Broadcasting Happiness"

Ralph Nader

Consumer Advocate, Lawyer & Author; Former Independent Presidential Candidate

Kel Mitchell

Award-Winning Comedic Actor, Best Known for "Kenan & Kel," "Good Burger" and "All That"

Action Bronson

Rapper Known for his Critically Acclaimed Mixtape, "Rare Chandeliers"

Brad Meltzer

Host of History Channel’s "Lost History" & "Brad Meltzer’s Decoded;" New York Times Best-Selling Author

Paula Zahn

Distinguished News Anchor & Nine-Time Emmy Award Winner

Graham Hill

Founder of Life Edited & TreeHugger.com

Matt McGorry

Actor Known for "Orange is the New Black" & "How to Get Away with Murder;" Feminist & Social Change Advocate

Alan Cumming

Emmy-Winning Actor Who Stars in "The Good Wife"

Ron Shaich

Managing Partner of Act III Holdings; Founder & Former CEO of Panera Bread Company

How the Founder of Panera Turned Around the Struggling Brand | Inc.

Ricki Lake

Actress, Producer, Author Host, The Ricki Lake Show

Gail Simmons

Culinary Expert, Food Writer, and TV Personality; Best Known as the Host of Bravo's "Top Chef"

Kimberley Locke

Singer / Television Personality

Tracy Anderson

Fitness Pioneer, Entrepreneur & Author, Founder of The Tracy Anderson Method

Tracy Anderson shares moves to work your whole body

Denise Austin

Fitness Expert, Author & Video Hall of Famer

Adrienne Bailon Houghton

Daytime Emmy Award-Winning Television Host; Acclaimed Pop-Vocalist; Producer & Founder of the Faith-Based Jewelry Brand "XIXI"

John Sculley

Vice-Chairman of MDLIVE, Former CEO of Apple Computers & PepsiCo; High-Tech Entrepreneur, Venture Capitalist & Author

Dr. Dean Ornish

Physician, Leading Researcher in Healthcare, Founder of the Preventive Medicine Research Institute & Bestselling Author

Christiane Northrup

Authority on Women's Health, Bestselling Author of "Goddesses Never Age"

Alice Walker

Pulitzer Prize & National Book Award-Winning Author; Best Known for "The Color Purple"