Is it true that if you die in a dream you can die in real life(tell me if real or you just heard of it)?

Question

like if you fall off a cliff in a dream and if you dont wake up befor you hit the ground u die because your brain thinks your dead so it like stops living(brathing,beating our heart,etc.)

Answer 1

i personally dont think this is true.

I had a dream once that I was attacked by a panther and died.

but here i am arnt i?

Answer 2

Well, if you do you won't know anything about it so nothing to worry about

Answer 3

It's not true. I used to think that too but I think it COULD happen, like if you really think you are going to die and have a heart attack because your heart is racing too fast while you're dreaming, but it is very rare.