When I was in college working on my business degree, I found I would have a great deal of trouble sleeping. Oh, not because of the school work. But, because of the many irons I had in the fire at the time. I was raising two small children, was in school full time, and working part-time. Of course, I was in my late twenties at the time, so had a little more energy than I have now. But, it was still a struggle. And I would go so fast during the day, that it was hard to turn the adrenalin off at night.
However, I did find a way to hit the snooze button in my mind. All I would have to do was read a section on fixed asset accounting and I would be off to dreamland.
Thank God, that there are computer programs to do that for us today!