Jim Fixx Jim Fixx James Fuller "Jim" Fixx (April 23, 1932 – July 20, 1984) was an American who wrote the 1977 best-selling book "The Complete Book of Running". He is credited with helping start America's fitness revolution, popularizing the sport of running and demonstrating the health benefits of regular jogging. He died of a heart attack while jogging at 52 years of age. His genetic predisposition for heart problems and other previous lifestyle factors may have caused his heart attack. Born in New York City, Fixx was a graduate of Trinity School in New York and Oberlin College in Ohio. His
Jim Fixx coronary artery 95%, a second 85%, and a third 70%. In 1986 exercise physiologist Kenneth Cooper published an inventory of the risk factors that might have contributed to Fixx's death. Granted access to his medical records and autopsy, and after interviewing his friends and family, Cooper concluded that Fixx was genetically predisposed - his father died of a heart attack at 43 after a previous one at 35, and Fixx himself had a congenitally enlarged heart - and had an unhealthy life: Fixx was a heavy smoker before beginning running at age 36, had a stressful occupation, had undergone a