An 80-year-old retired engineer, who flies planes and races boats, shares his 3 longevity habits

John Adams, 80, stays active without a gym membership. John Adams John Adams helped develop a medical device to treat coronary heart disease. Years later, he had two procedures to treat his narrowed arteries using the device he created. Now, at 80, he stays active without going to the gym and keeps himself busy in his shop. A decade after he co-founded a medical device to open up clogged arteries caused by coronary heart disease, John Adams underwent his own treatment. An electrical enginee...