i think to myself, okay, i try to exercise mostly every day, probably 30 or 40 minutes. you say that's not enough. if you're sitting around the rest of the day it's like you're smoking cigarettes. >> sitting for five hours -- >> what are we supposed to do? >> get up every half hour and walk four or five minutes. that's it. your body was designed to move. your lymphatics that control your system has no muscle. the rhythmic contractions of the muscles in your body when you walk make your body work. >> the second preventative strategy is a very simple one. is that 2,000 years ago, hip pot craty said you take the bark of the willow tree, chew it and pain and fever go away. this is a compound if you take it every day over 40 you reduce the death rate of cancer by 30%. it's called a baby aspirin. it blocks inflammation. inflammation is at the root of cancer, heart disease and neuro cognitive decline. dramatic data, we as a society don't act on it. if everybody over the age of 40 took a baby aspirin we've had a