Tim Grover

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

Dara Torres

12x Olympic Medalist, NYT Bestselling Author, Entrepreneur & Healthcare Reform Advocate

Amy Purdy

Former "Dancing with the Stars" Contestant & Paralympic Professional Snowboarder

Daphne Oz

Emmy Award-winning Television Host, New York Times Bestselling Author, Chef & Entrepreneur

Dolvett Quince

Fitness Guru & Trainer from "The Biggest Loser"

Tony Horton

Fitness Expert & Founder of Fitness Program P90X

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

Giuliana Rancic

Entertainment Journalist & Breast Cancer Survivor

Dr. Jill Bolte Taylor

Scientist, Author & CEO of My Stroke of Insight, Inc.

Venus Williams

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

Joe Theismann

World Champion Quarterback, Broadcaster & Entrepreneur

Michael Strahan

Co-Host of "Good Morning America", "Fox NFL Sunday" Analyst, NFL Hall of Famer & Super Bowl Champion

Michael Strahan and his daughter Isabella, 19, reveal her brain cancer diagnosis in emo...

Ozzie Smith

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

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

Dr. Michael Roizen

Chief Wellness Officer at the Cleveland Clinic & Co-Founder of RealAge; Anesthesiologist & Former FDA Advisory Committee Chair

Vince Papale

Former NFL Player & Inspiration for the Movie "Invincible"

Shannon Miller

Olympic Gold Medalist, Health Advocate & Cancer Survivor

Joan Lunden

Award-Winning Journalist, Best-Selling Author, Health & Wellness Advocate

Greg Louganis

4x Olympic Gold Medal Diver; LGBTQ Activist & Author

Lisa Leslie

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

Mark Ballas

Dancing with the Stars Champion & Mental Health Activist