Giuliana Rancic

Entertainment Journalist & Breast Cancer Survivor

Daniel Kraft, M.D.

Physician-Scientist; Founder of Exponential Medicine; Chair for Medicine & Neuroscience at Singularity University

Lisa Leslie

WNBA Champion, Olympic Gold Medalist & Author of "Don't Let the Lipstick Fool You;" Coach of Ice-Cube's BIG3 Basketball League

Joe Theismann

World Champion Quarterback, Broadcaster & Entrepreneur

Kyle Maynard

Inspirational Athlete, Author, Entrepreneur & Two-time ESPY Award Winner

Mark Ballas

Dancing with the Stars Champion & Mental Health Activist

Ian Morrison

Healthcare Futurist and Author

Dr. Holly G. Atkinson

Award-Winning Medical Journalist

Dolvett Quince

Fitness Guru & Trainer from "The Biggest Loser"

Olivia Ward

Winner of "Biggest Loser" Season 11

Venus Williams

Professional Tennis Player, Four-Time Olympic Gold Medalist, Equal Pay Activist, Author & Entrepreneur

Tony Horton

Fitness Expert & Founder of Fitness Program P90X

Crush It!: The Revolutionary Fitness Plan for All Levels That Burns Fat, Builds Muscle,...

Deion Sanders

Head Football Coach at the University of Colorado Boulder; NFL Hall of Famer, Two-Time Super Bowl Champion, and Broadcast Analyst

Elevate and Dominate: 21 Ways to Win On and Off the Field

Ozzie Smith

15-Time MLB All-Star & National Baseball Hall of Fame Inductee; Former Shortstop for the San Diego Padres & St. Louis Cardinals

Tim Grover

CEO of Attack Athletics, Best-selling Author of "Relentless" and "Jump Attack"