I found a 1 year old dream journal entry and i thought to share it.
It begins with me having a very stupid accident where i stretched my lower back to far, which made my
left side kidney feel weird. I was worried that I might have injured it and I immediately began eating more healthy stuff. This seemed to work for some degree but when the feeling continued I was getting annoyed by it and was trying to command it to go away.
That night I slept very, very good and I remembered only one dream but very detailed. It went something like this.
I was lying on a table in a hospital, I was totally alone in there but still something was happening to me.
I could see I was being operated on and that my kidney's and liver where removed. I could see them lying on a plate next to me (they where looking very unhealthy). At this point I was a bit freaking out but soon changed into something like joy when I saw that they where being replaced by healthy looking ones.
They next day I woke up and the annoying feeling was gone and I felt better than ever which lead me to believe that I was healed from withinn my dream.
I hope this makes sense cause it's a shortened version from what was written in the journal entry.
There is some truth to that because our bodies repair themselves when we sleep. Your sub-conscious taped into that and manifested itself in a dream.