Conventional wisdom tells us that we should get at least eight hours of sleep a night, but a recent report by the BBC suggests that this might just be a myth.
Historian Roger Ekirch believes that in the past, it was normal to get two sleep sessions, one early evening, a break, and then a second later at night.
The report cites historical evidence that seems to prove this pattern; neighbors visited between sleeps and doctors advised that conception of a child is best between sleep sessions.
Learn more about the report in the video above.
BEFORE YOU GO
In order to better understand what sleep does for your body and brain, here's a look at what's happening as you transition from going about your day to hitting the hay.