There's always something to wake you up every hour or two. I fell asleep at 12, at 1 they came and took my vitals. At 2 the alarm on my IV went off because of air in the line. Then if it wasn't my alarm going off it was my roommates. At some point he or the nurse, I don't know, spilled urine on his side of the curtain so there was that wake up, then the janitor came by and woke us up. I got maybe a solid 2 and a half hours of sleep and then they came to draw blood at 8:30ish. At that point I figured it was time to get up and find the coffee.