His answer caught me by surprise. I almost knew he'd say something like eating the food you grow, or taking care of your digestive system, or something along those lines.
This isn't to say that you should go out and adopt a dog just because you think he'll help you avoid a heart attack. But even if your pets don't necessarily bring more life to your heart, they'll definitely bring more heart to your life.
The right food can be a prophylaxis that can actually thwart illness. The Okinawan people -- who are the longest lived people in the world -- use the term nuchi gusui, which literally means "food is medicine." But modern medicine is just beginning to understand the biochemistry behind the concept of food as medicine.
Navy SEAL Combat Veteran joins HuffPost Live to discuss how he found happiness.