I used to believe that I couldn't fall asleep until I yawned, and that I would have to be COMPLETELY still afterword. If I moved at all, I would have to wait until I yawned again and didn't move before I could fall asleep.
A childhood belief about sleeping

others believed things like this
- when i was a kid, i used to think that if i didn't fall asleep, morning wouldn't comeAnon
- When I was a child i used to believe that if i did not fall asleep an elf would come for me Anon
- I used to think that when my arm would fall asleep that it was raining inside my armAnon
- Whwn I was about 6 I used to think that if a crow bit you you would fall asleep for 100 years!— Lisa
- i used to believe that if you burped and yawned at the same time your eyes would pop out— kelso
- I used to believe that if I stood at the top of the stairs, closed my eyes and yawned, I flew down them— Sam