Chacham's Journal: Verbiage: Twice sleep

I've saw this once before, not sure where, but just searched and found it again. That is, that people used to sleep twice per night.

Close to 20 years ago, i fell into that habit, of sleeping from 3 or 4 until 7, then again from about 11 to 5 or so, garnering 9 hours per night. I felt great. I wonder if it was due to the 9 hours, or due to the twice sleep. (Or chatting on Geocities.)