A few months ago i was dreaming what seemed like non stop all night, really vivd dreams. I was waking up feeling very tired, very groggy and as though i had been on the go all night. I also found it very hard to wake up properly and get up. This all stoppped for a while but has now returned. I have heard it can be caused by a lack of serotonin and i do feel quite down and very anxious at the moment (started saint johns wort). Does anyone else have the same problem or know anything about it?