can you actually catch up on sleep? the national sleep foun founddation agrees with that study. it is sleep debt. we re not chipmunks. we can t store sleep and use it on the weekend. we actually have to have regular sleep each night nine hours. jenna: how many people are getting regular sleep. that is the problem. there is rapid eye movement sleep. you have to be in deepest part of sleep. takes several hours to get there you can t sleep on and off. if you don t do this you have a higher risk of high blood pressure, diabetes, depression, obesity. all kinds of medical problems. jenna: sounds terrible. i think all of us are thinking wow, none of us are getting enough sleep so we ll be susceptible to some of these things. that s right. jenna: you think about some of these students, right? if they don t study and don t do well that has serious consequence as well so you have to pick and choose. if you combine hours of sleep and get five hours overnight and get two hours nap in do they