I saw in the newspaper here (Aust) today that a local researcher claims there is a link between a baby's dreams and SIDS. He says it is possible they dream they are back in the womb and relying on the mother's oxygen and so stop breathing! I thought this was fascinating...although scary. It makes sense that babies would dream about being in the womb since this is about the sum total of their life experience! And they do spend a large proportion of their sleep time in REM sleep, which is when dreams usually occur.
There is a study which showed that when adults dreamed of being underwater they actually held their breath! Of course you can ask an adult what they just dreamt but you can't ask a baby, so I'm not sure how this guy plans to prove his theory but he has written a book about it.
What do other mumsnetters think about this?