Day 380 - It's normal to wake up at night -

Did some research on whether it's normal to wake up once at night. So it's actually common!

- continuous sleep experienced in childhood/teens is not typical for adults
- most people wake 2-3x during the night
- historically, humans don't sleep 8h. The terms "first sleep" and "second sleep" is hundreds of years old.
- industrialisation / electric light made waking activity encroach further into the night
- we wake in night due to sleep cycles, a normal sign of body's internal clock and sleep mechanisms working well