is there less stress, did you find for example in icaria?l people you find this blue zone in the middle of of the mediterranean, and people say yeah, if i live in a place like that, i wouldn't have stress. but the reality is they have worries about kids, finances and healths. but what they have that we don't have are daily rituals to shed that stress, in some blue zones, it is simply prayer, other areas, what their families do. in other places, taking a nap. we know that people that take a nap at least five days a week have a third less heart disease problem than people that don't take a nap. it is 15 days to unwind the stress. >> i would love to be able to do that. >> it is hard, but there are things you mentioned, as well. i found it fascinating. this idea in investing in your friends, what did you mean by that? >> there are two important aspects, we know the happiest people in america are interacting face to face, six hours a day. so we evolved to be interactive creatures, so the health behaviors are as infectious as catching a cold or th