Mayim Bialik

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

Soleil Moon Frye

Social Media Expert, Entrepreneur & Eco-Leader; Author of "Happy Chaos"; Alzheimer's Awareness Advocate

Diana Nyad

World Champion Swimmer, Storyteller, Sports Journalist & Broadcaster

Gabrielle Union

Actress, Voice Artist, Activist, Author & Investor

Sean Astin

Actor, Director, Voice Artist & Producer Known For "Lord of the Rings"

Maria Bello

Actress, Activist & Vital Voices Global Ambassador

Laila Ali

Undefeated Four-Time World Champion Boxer & Lifestyle Expert; Heart Disease Awareness Advocate

Wil Wheaton

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

Jesse Tyler Ferguson

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

Devin Alexander

New York Times Bestselling Author, Celebrity Chef Known For "Biggest Loser"

Tony Plana

Actor & Director Known for "Ugly Betty;" Supporter of Comprehensive Immigration Reform; Advocate for Alzheimer's Disease

Lauren Scruggs

Fashion Journalist, Blogger & Author of "Still Lolo: A Spinning Propeller, a Horrific Accident, and a Family's Journey of Hope"

Eva Longoria

Award-Winning Actress, Producer, Director, Activist, Philanthropist & Designer

Jessica Alba

Actress; Entrepreneur; Founder & CEO of The Honest Company

Richard Simmons

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

Laverne Cox

Award-Winning Transgender Actress, Producer & Equal Rights Advocate

Alicia Silverstone

Actress & Animal Rights Activist

Rebecca Walker

Bestselling Author & Founder of the Third Wave Feminism Movement

What's Your Story? with author Rebecca Walker

Jason Alexander

Actor, Writer & Director; Best Known for His Work on "Seinfeld"

Candace Cameron Bure

Women & Youth Speaker Best Known for Her Role on "Full House" & "Fuller House"; Former Co-Star on "The View"