STACK Experts

Become a STACK Expert

The best sports performance experts in the country—trainers, nutritionists, sport psychologists and others—contribute STACK's Sports Performance content. These men and women work with top athletes and teams, at both the collegiate and professional level, to help them get better and make smart training, nutrition, skills and gear choices. They regularly offer the benefits of their experience to help STACK's readers and web visitors become better athletes. Read about their backgrounds and find their articles and posts—all designed to help young athletes safely and effectively boost their performance. Learn More.

A to Z Basketball Insiders

A to Z Basketball Insiders offers skill development, personalized workouts and recruiting advice, such as helping parents choose the right AAU camp for their athlete based on budget and skillset. Zach Zegarowski and Mandy Carter-Zegarowski, parents of Philadelphia 76ers star Michael Carter-Williams, formed A to Z Basketball Insiders to help guide families through the journey that they took mostly on their own.

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Abby Wambach

Abby Wambach has played for the U.S. women's national soccer team since 2001. She's won two Olympic gold medals and was named the 2012 FIFA World Player of the Year.

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The American Council on Exercise® (ACE) is the world’s largest nonprofit fitness certification organization, dedicated to providing education that helps individuals live their most fit lives. After more than 25 years of providing comprehensive, unbiased scientific research impacting the fitness industry, ACE has become a leading and established resource for both fitness professionals and fitness enthusiasts. For more information, call 800-825-3636 or visit the ACE website at

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Adam Bornstein

Adam Bornstein is an award-winning fitness and nutrition writer and editor. Named ”one of the most influential people in health,” Bornstein was previously the editorial director for and the fitness editor for "Men’s Health" magazine. He is the author of "Man 2.0: Engineering the Alpha" and five other health and fitness books. Bornstein is also the founder of Born Fitness LLC, a health and fitness publishing and consulting company. He has appeared on Good Morning America and E! News. For more about Bornstein, visit

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Adam Kessler

Adam Kessler is a speed coach who has worked with state championship teams, as well as with athletes in different sports, many of whom have competed in the NBA, NFL and overseas. He is the owner of Fitness Planning Consultants (Columbus, Ohio), and he is the founder of, a website that covers current trends in speed development, featuring what professional athletes are doing to make themselves stronger and faster. Visit him at

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Adam Lockhart

Adam Lockhart is the head strength and conditioning coach at Crash Conditioning in Calgary, Alberta, where many top hockey players and prospects train, including NHL defensemen Duncan Keith and Mike Green. His coaching strengths are in speed and agility training, as well as Olympic weightlifting. He has coached members of Canada’s bobsled and skeletons teams. He has also trained other national teams in bobsled and skeleton, as well as international athletes in both track and field and Olympic weightlifting. Lockhart’s personal background is in track and field, where he competed nationally in long jump, triple jump, 200m and 400m.

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