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On our 4th Anniversary, get 4 years of 12min Premium!
*Exclusive for in-app purchases
Ben Greenfield is a health and fitness instructor, author, podcaster, anti-aging consultant, professional Spartan athlete, and Ironman Triathlete. In 2013 and 2014, he was in the top 100 most influential individuals in health and fitness. He is the author of The Wall Street Journal Bestseller "Boundless" and New York Times Bestseller "Beyond Training.’’
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