Adam Richman

Host of Man v. Food & Man v. Nation

Alex Newell

Grammy Award-Winning Actor & Singer Known for "Glee"

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Alicia Silverstone

Actress & Animal Rights Activist

Andrew Zimmern

Four-Time James Beard Award-Winning TV Personality, Chef, Writer & Teacher

Bert Jacobs

Co-Founder & Chief Executive Optimist of Life is Good

Bethany Hamilton

Professional Surfer & Shark Attack Survivor; Inspiration for the Film "Soul Surfer"

Bethany Mota

YouTube Sensation Known for her Fashion, Beauty & DIY Tips; "Dancing with the Stars" Season 19 Contestant

Bonin Bough

Chief Growth Officer at Triller; Former Chief Media & eCommerce Officer at Mondeléz International (formerly Kraft Foods), Host of CNBC's Cleveland Hustles & Author

Boris Kodjoe

Film and Television Actor; Model; "Soul Food" and "The Gospel"

Buddy Valastro

Host of "The Cake Boss" & "The Next Great Baker"

Chris Powell

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

Christian Siriano

Fashion Designer, Founder of Christian Siriano, Winner of "Project Runway" Season 4

Colin Cowie

Celebrity Event Planner & Designer, Author, Lifestyle Expert & Ambassador of Style

Dan Abrams

Chief Legal Affairs Anchor at ABC News & Founder of Abrams Media

Dan Savage

Advice Columnist & Host of the "Savage Lovecast" Podcast; LGBTQ Activist

Dr. Drew Pinsky

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

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”

Gretchen Rubin

New York Times Best-Selling Author of "The Happiness Project;" Host of Podcast "Happier with Gretchen Rubin"

Gretchen Rubin - Knowing Yourself: Why You're Happy and You ...