When I was in kindergarten, I used to think that people stopped breathing when they went to sleep. After learning from my mother that they didn't, I was shocked!
A childhood belief about sleeping

others believed things like this
- When I was a child, I used to believe that when we slept, we stopped breathing.Anon
- I used to believe that my mother didn't sleep and that she was a super hero!— AntoineBoom
- I was shocked when I found out that dogs in foreign countries didn't know English commands.Anon
- I used to believe that when you fart, your tummy was breathing!— Nicholas Orsmond
- I used to believe that if you didn't go to sleep, the sun would never come up.— terri
- I used to think when you smelled a fart, that you were breathing in tiny pieces of poop.— brandypandy