Conscious dreams are both an interesting and rather controversial phenomenon. This is because it is a term used to describe dreams whose action is determined by the dreamer himself - he can influence both the subject of the dream and what exactly happens in it. The possibility of using conscious dreams as a specific therapy has been mentioned, and there are also descriptions of techniques which would make it possible to take control of the dream subject. On the other hand, however, there are criticisms that question whether conscious dreams are possible at all.