All throughout my childhood, I believed that if I didn't hold my breath and put my feet up on the seat in front of me while going by a cemetery (in a car or bus, of course) and then count five red cars afterwards, in which only then I could breathe again, I'd have nightmares. And since I was a little kid, nightmares were a pretty scary thing.
Sometimes I still hold my breath while going by a cemetery. I haven't had a nightmare in quite a few years. :-)
A childhood belief about people

others believed things like this
- If you hold your breath and make a wish under a highway tunnel it will come true....I still hold my breath :)— aj
- I still hold my breath when I pass by cemetaries because it is impolite to breathe when other people can't.— Crystal
- when i was a little kid. i used to think that when u hold ur breath ur heart stops.. LOL :P — Annonymus
- I used to belive that if you didn't hold onto hte toilet seat you would fall in.— silly
- I used to believe that I couldn't pass by the cemetery at night because the dead people would wake up.— Marcos Carvalho
- eating cheese before bed gives you nightmaresAnon