I used to think that you were only supposed to breathe when you were asleep so I would try to hold my breath for as long as possible during the day
A childhood belief about sleeping

others believed things like this
- I still hold my breath when I pass by cemetaries because it is impolite to breathe when other people can't.— Crystal
- If you hold your breath and make a wish under a highway tunnel it will come true....I still hold my breath :)— aj
- when i was a little kid. i used to think that when u hold ur breath ur heart stops.. LOL :P — Annonymus
- You couldn't have your belly button covered for too long or it would be harder for you to breathe.— Jess
- i used to belive that children had to be taught how to breathe.— Dave
- when i was 4 i believed i could breathe under water, one day i decided to try it and woke up in the hospital!Anon