our ability to remember information the next day decreases if we don't get enough sleep. if you are getting older, you find yourself losing those car keys, it may be the fact that you are not losing sleep but getting older. >> i fine when i lose sleep, i say things i normally don't say and eat a lot more. >> especially around eating a lot more, obesity is a big problem. we all try to track it via nutrition or exercise. >> we see appetite control hormones, it tells us whether we are hungry or full. we see an imbalance and we find ourselves wanting to overeat when we get an opportunity to do that. >> or eating to stay awake. after several weeks of sleeplessness, you have maybe a job that makes them have to do this or a newborn as clay was mentioning at the top of the show. these are risk factors, risk of heart attacks increase, lower