Bertice Berry

Sociologist, Author and Educator

Rob Riggle

Actor, Comedian, Writer, Producer, Director & Former U.S. Marine

Chris Powell

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

Mika Brzezinski

Co-host of MSNBC's "Morning Joe" & Bestselling Author; Founder of "Know Your Value"

Amy Robach

Co-Host of "Amy & T.J. Podcast"; Former Co-Host of "20/20" & Former ABC News Correspondent for "Good Morning America;" Breast Cancer Survivor

Kristen Kish

"Top Chef" Host & Season 10 Winner; Cookbook Author

Wil Wheaton

Actor, Author & Blogger; Known for "Star Trek: The Next Generation" & "The Big Bang Theory"

John Ratzenberger

Emmy-Nominated Actor, Entrepreneur & Philanthropist

Tim Meadows

Actor & Comedian; Known for "Saturday Night Live"

Marilu Henner

Actress, Producer & NY Times Bestselling Author

Bob Harper

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

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

Adam Beach

Award-Winning Canadian Actor

Rick Bayless

Award-Winning Chef, Cookbook Author, & TV Personality Known for His Authentic Mexican Cuisine

Dave Barry

New York Times Best-Selling Author & Humorist

Swamp Story: A Novel

Frank Fontana

Lifestyle Expert & Designer; Host of "Design on a Dime" on HGTV

Lena Dunham

Writer, Director, Actor & Producer Best Known for HBO’s “Girls”

Jesse Tyler Ferguson

Actor & LGBTQ Activist; Best-Known for “Modern Family”

Sarah Colonna

Comedian, Author & Actress; Known for "Chelsea Lately" and "Shameless"

Andrew Zimmern

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

Giancarlo Esposito

African-Italian American Actor, Director, Producer; Best Known for his Role as Gustavo "Gus" Fring on AMC's Breaking Bad