How Athletes Can Stay ‘Fast After 50’

A celebrated triathlete argues that high-intensity interval training can reduce the effects of aging on performance. As we get older, most of us get slower. But aging athletes may be able to stave off those changes more successfully than most people realize. That’s the conclusion that Joe Friel, a celebrated triathlete, coach and author, reaches in his new book, “Fast After 50.” As he approached his 70th birthday, Mr. Friel began researching how aging affects athletic performance. Read More

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