back in the lab, dr. sizer showed me just what was going on inside my brain while i was driving. >> this is evidence that you're falling asleep. >> reporter: see how these lines are becoming more jagged? that's sleep coming on. and these lines show my blinking is getting slower what about when i drove off the road? >> we could see it coming. >> reporter: looking at the chart here, how long was my microsleep in this one episode? >> so, in this one episode, we're talking about one, two, three, four, five or six seco s seconds. >> reporter: what was most shocking, dr. sizer said, i fell asleep, i microslept, 21 other times. >> you had dozens of times where your eyes began rolling around. >> reporter: i didn't remember a single time. just think what could have hatched if i was on the open road. but beyond this, there are less obvious risks to your health that can be caused from lack of sleep. alzheimer alzheimer's, obesity, heart disease, cancer and even death. so, with our health on the line, how do we get enough