i used to think each person has a certain number of heart beats to use up before they die. I thought this was why your heart beats more slowly if you are fitter: you are saving more beats up for later!
A childhood belief about general

others believed things like this
- The song called heart of glass mixed me up as a kid. I heard "Heart and ass". — oops
- I used to think that when people had heart attacks someone came and stabbed their heartAnon
- I used to think that if you eat pig heart, you could grow another heart and be twice as healthier. Anon
- I thought everyone only had a set number of breaths before they died.
I breathed slowly for a long time.Anon - I thought you always die if you A. get cancer or B. have a heart attack— Nate
- I thought the song "Party Time" by Moby was actually saying "heart attack" (this was before I knew the title)— Elviessa