>> larry: i'll ask wayne about that in a moment. president clinton doesn't seem to be taking it easy. here's more of what he said today. >> i worked about three hours this afternoon on haiti. we have a lot of challenges there. we have too many people living in close quarters with water building up and too much risk of water-borne illnesses and stuff like that. but i feel great, and the doctors and hospital crew did a great job, and as i said, i even did a couple miles on the treadmill today, so i feel good. >> larry: politics aside, he is amazing. what do you make of what jane said about emotions in the heart, dr. isom? >> she knows more about it than i do and i'm sure not an expert. i do think i see this after surgery, if somebody comes out of surgery with a positive attitude and is emotionally stable, they're going to do better. i guess you could say the same thing even before the surgery, if they've dpot a positive attitude and they take care of