James Fuller Fixx

James Fuller Fixx, known as Jim Fixx, was an American author and runner. He is credited with helping start America's fitness revolution by popularizing the sport of running and demonstrating its health benefits. Fixx started running at age 35, transforming his health significantly, and wrote several books on the subject. He was a member of the high-IQ club, Mensa, and published various works on running and puzzles.