Health and fitness

 I was an exercise enthusiast. I've exercised, I'll bet, uh, pretty much every day of my life. It I had two grandfathers who were alcoholics. But for me, my way of coping with life is exercise. When I'm nervous or anxious or tired or happy or sad or whatever, I exercise if I have the time, and sometimes even when I don't. You might have seen me in an airport waiting for a flight, running up the down escalator with my backpack on to kill 20 minutes. But I, uh, always thought that exercise was the best thing for my heart. And I think it's how I decided at age 15 I wanted to be a cardiologist, actually. But now that I'm 56 and a lot of decades have gone by, I've started to have a few warning signs from my heart.  A couple of years ago I noticed this and I got on a mission. I'm a research cardiologist and I have a research fellow and he and I have been working on this for the past couple of years. And with the help of some of the brightest cardiologists from...