Matthew Quick

Bestselling Author Known For "The Silver Linings Playbook"

Maureen McCormick

Actress & Author Best Known for "The Brady Bunch"

Brittany Snow

Actress, Producer, Director, Singer & Co-Founder of Love Is Louder

Dr. Patricia Dykes

Assistant Professor of Medicine at Harvard Medical School; Sr. Nurse Assistant, Program Director of Patient Safety Research and Practice, & Program Director of the Center for Nursing Excellence at Brigham & Women's Hospital

Lee Rhodes

Accidental Entrepreneur with a Mission to Give Back; Founder of glassybaby

Rosie O'Donnell

Comedian, Actress, Author & Television Personality

Gabrielle Union

Actress, Voice Artist, Activist, Author & Investor

Jodee Blanco

Bullying Expert & Activist; Author of "Please Stop Laughing at Me"

Deborah Norville

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

Malaak Compton

Activist & Philanthropist

Nastia Liukin

Olympic Gold Medal Gymnast

Elizabeth Banks

Actress Best Known for "The Hunger Games" Series and "Pitch Perfect"

Dr. Francis Collins

Head, Molecular Genetics Section, National Human Genome Research Institute; 16th Director, National Institutes of Health

Dr. Francis Collins: "I don't see a conflict" between science and faith ...

Dr. Judith Wright

Inspirational Speaker, Trainer, Life Coach & Best-Selling Author of "The Soft Addiction Solution"

Mindy Grossman

Board Member: UNICEF USA, Fanatics, Inc., & Vault Health; Former President & CEO of WW International

Daryl Hannah

Actress, Best Known for "Kill Bill" & "Splash"; Environmental Activist

Jen Selter

Fitness Personality & Instagram Celebrity

Mavis Leno

Chair of the Campaign to Help Afghan Women & Girls

Brett King

Best-Selling Author, World Renowned Futurist & Media Personality

Vicki Lawrence

Actress, Comedian & Women's Activist; Best Known for her Characters on "The Carol Burnett Show"

Deepak Chopra

Co-Founder of The Chopra Center for Wellbeing

Mayim Bialik

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

Sheryl Lee Ralph

Actress, Broadway Singer & Producer; Known for "Abbott Elementary"

Wil Wheaton

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

Marlo Thomas

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

Irwin Redlener

Expert on Disaster Medicine

Robert H. Lustig

Endocrinologist, Professor of Pediatric Endocrinology, New York Times Bestselling Author

Dr. Drew Pinsky

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

Demi Lovato

Grammy Nominated Singer-Songwriter, Musician, Philanthropist & Mental Health Advocate

Richard Simmons

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