UCLA recently led a sleep study where they gave one of the last remaining hunter-gatherer cultures some tracking devices, and learned some interesting things.
- Participants stayed awake an average of 3 hours and 20 minutes after sunset.
- Average sleep time was 6 hours and 25 minutes. (6 hours in the summer, 7 in winter)
- Waking time occured at the lowest temperature of the 24-hour period, even after sunrise
- Napping is rare
- Insomnia is extremely rare
Source: https://www.cell.com/current-biology/fulltext/S0960-9822(15)01157-4
Incredibly, it sounds like temperature may be the leading factor in better sleep. I’m thinking maybe it’s time to get a OOLER programmable sleep system.