Dr. Jennifer Ashton

Board-Certified Ob-Gyn, Author & TV Medical Correspondent

John Cena

WWE Professional Wrestler, Bodybuilder, and Actor Known for "Trainwreck"

Tig Notaro

Grammy Award-Nominated Stand-Up Comic, Writer, Radio Contributor & Breast Cancer Survivor

Tiki Barber

NFL Former Pro Bowl Running Back & Founder of Thuzio

Hoda Kotb

Award-Winning Broadcast Journalist, Television Personality, Author & Co-Anchor of NBC News' TODAY

Martina Navratilova

Retired World #1 Tennis Player, International Tennis Hall of Famer, Gay Rights Activist & Author

Julia Louis-Dreyfus

Emmy Award-Winning Actress Known For "Seinfeld" & "Veep"

Laura Ingraham

Political Commentator, Television Host & Journalist

Shannen Doherty

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

Shannen Doherty Wants to "Embrace Life"

Dr. Mikhail Varshavski

Known as "Doctor Mike;" Leading Medical Media Voice Who Communicates the Value of Preventive Medicine

Christina Applegate

Emmy Award-winning Actress & Co-Host of "MeSsy"; Breast Cancer Survivor & Multiple Sclerosis Survivor

Teri Hatcher

Award-Winning Actress

Rita Wilson

Actress, Producer & Singer Known for "Sleepless in Seattle;" Alzheimer's Advocate

Brian Kelly

Head Football Coach at Louisiana State University

Brian Kelly's First Team Meeting as LSU Football Coach

Maura Tierney

Golden Globe Award-Winning Actress & Breast Cancer Survivor

Andy Reid

Head Coach of the Kansas City Chiefs

Wanda Sykes

Emmy Award-Winning Comedian, Actress & Author

Greg Olsen

Former NFL Tight End, Football Sportscaster & Founder of Receptions for Research: The Greg Olsen Foundation

Cynthia Nixon

Actress Known for her Role as Miranda Hobbes on HBO's "Sex and the City"; Former Candidate for Governor of New York

Rob Lowe

Actor, Best-Selling Author, Podcaster & Philanthropist