Dean Karnazes

The “Ultramarathon Man”, Ran 3,000 Miles Across the Country with Live! with Regis and Kelly’s “Run Across America” in 2011

Rulon Gardner

Olympic Gold Medalist Wrestler, 2010 National Wrestling Hall of Fame inductee; Bronze Medal Winner at 2004 Athens Olympics, Contestant on NBC’s “The Biggest Loser” & Author

Kristin Cavallari

TV Personality, Fashion Designer, Bestselling Author & Founder of the Lifestyle Brand Uncommon James

True Comfort: More Than 100 Cozy Recipes Free of Gluten and Refined Sugar: A Gluten Fre...

Venus Williams

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

Amanda Gore

CEO of The Joy Project; Author & Psychologist; Emotional Intelligence and Performance Expert

Raj Patel

Award-Winning Writer, Food Politics Activist, Filmmaker & Academic

Tony Horton

Fitness Expert & Founder of Fitness Program P90X

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

Lou Ferrigno

Actor Best Known For His Role as The Hulk; Fitness Trainer/Consultant and Retired Professional Bodybuilder

Troy Aikman

Three-Time NFL Super Bowl Champion Quarterback, Dallas Cowboys; ESPN Monday Night Football NFL Game Analyst

Paula Zahn

Distinguished News Anchor & Nine-Time Emmy Award Winner

Kathy Kaehler

Celebrity Trainer & Lifestyle Expert

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

Christine Dumas

Consumer Health & Lifestyle Reporter; Strategic Healthcare Policy Advisor; Author

Matthew Kelly

Internationally-Acclaimed Speaker & Bestselling Author

Nothing Is Random: The Old, The New, and The Enduring Ideas In Business

Mia Hamm

Retired Professional Soccer Forward; Two-Time Olympic Gold Medalist; Founding Member of the Women's United Soccer Association

Allyson Felix

Track & Field Athlete, Olympic Champion & 12-Time Gold Medalist at the World Championships; Co-Founder of Saysh

Serena Williams

Iconic Professional Tennis Player & Olympic Gold Medalist; Activist, Philanthropist & Entrepreneur

Andy Roddick

Tennis Commentator & Former Co-Host of Fox Sports Live; Retired World No. 1 Tennis Player & International Tennis Hall of Famer

Abby Wambach

6-Time U.S. Soccer Athlete of the Year; Two-Time Olympic Gold Medalist & FIFA Women's World Cup Champion; Pay Equity & LGBTQ Rights Activist

Brandi Chastain

Defender on the U.S. Women's 1999 World Cup Champion Soccer Team