History of Sleep!
"Before the 1800s, people had a "first" and "second sleep." They would sleep 3-4 hours, wake up for 2-3 hours to do some type of activity, then go back to sleep until morning" (2017, Pous)
References
Pous, T. (2017, November 22). 81 Fun Facts That'll Make Everyone You Know Say "I Never Knew That!". Retrieved from Buzzfeed: https://www.buzzfeed.com/terripous/81-super-interesting-facts-to-blurt-out-in-the-middle-of
Published on January 31, 2020