Billie Lourd

"Booksmart" and "Scream Queens" Actress, Daughter of Carrie Fisher

Peter Attia

Leading Figure in the Fight Against Diabetes & Obesity; Founder, Attia Medical, PC; Co-Founder & Chief Medical Officer of Zero App

Lily Collins

Actress, Model & Author Best Known For "Emily in Paris"

Lily Collins - Vogue Scandinavia

Terrell Owens

Former NFL Wide Receiver, NFL Hall of Famer & Alzheimer's Advocate

Gwen Stefani

Three-Time Grammy Award Winner, Singer-Songwriter, Coach on "The Voice," Fashion Designer & Entrepreneur

Selma Blair

Actress; Multiple Sclerosis Survivor; Healthcare & Disability Advocate

Jordin Sparks

Pop and R&B Vocalist; American Idol Winner

Lisa Nichols

Best Selling Author, Motivator, Coach, Teacher & The Secret Contributor

Daniel Amen

Award-Winning Psychiatrist & Best Selling Author

Raising Mentally Strong Kids: How to Combine the Power of Neuroscience with Love and Lo...

Drew Brees

Philanthropist & Former Super Bowl MVP-Winning Quarterback for the New Orleans Saints

Shannon Sharpe

3x Super Bowl Champion & Pro Football Hall of Famer

Rich Roll

Athlete, Wellness Advocate, Motivational Speaker, Addiction Survivor & Author

Tracy Morgan

Comedian, Former SNL Cast Member & Actor on NBC's "30 Rock"

Jenny McCarthy

Actress, Host & Judge on Fox's "The Masked Singer"; Beauty Entrepreneur & Founder of Formless Beauty

Neil Young

Canadian Singer-Songwriter Known for "Heart of Gold" & Played in Bands Buffalo Springfield and Crosby, Stills, Nash and Young

Andy Puddicombe

Co-Founder of Headspace

Shannen Doherty

Actress, Producer, Author & TV Director; Breast Cancer Survivor

Shannen Doherty Wants to "Embrace Life"

Nick Jonas

Multi-Platinum & Grammy Nominated Recording Artist, Actor, Award-Winning Songwriter, Member of the Jonas Brothers & Diabetes Advocate

Jessica Simpson

International Music Superstar, Bestselling Author & Entrepreneur

Kareem Abdul-Jabbar

Highest-Scoring NBA Player in History & Cancer Survivor

A Season on the Reservation: My Soujourn With the White Mountain Apaches