When they were still getting my thyroid meds adjusted, and I had just finished the second-last-semester of law school (so no more adrenaline), I was sleeping 18-20 hours a day. I'd get up, eat, sleep a few hours, shower, sleep a few hours, eat, sleep, see Hubby, sleep.
That lasted a few weeks, then the last semester started and my adrenaline kicked in again. By the time school was over and I was into Bar prep, I could barely think. Any surprise I didn't pass the Bar the first time?