It was the sweatiness and thirst of summer that woke me up. The darkness of night was still lingering around with a hope that sun might not arrive. The sun was not visible but one can see the day has started. I had a glass of water and got back to bed but couldn't sleep. Not knowing what to do (didn't plan to wake up this early) I walked across the silent rooms thinking of the dream I had last night. Dreams visit me rarely and my recollection of them the next day is even rarer. There was a phase, an year or so, I didn't dream anything. My mother says it's not a good omen to not have dreams at all.
I think it's a mind play. I think every night when your brain is organizing your thoughts and creating new memories and establishing synaptic connection between old and new, some of them might have wandered off to the part of brain that projects the visual effects :-). And if you are not having any dreams that's probably because your mind is in zen mode and isn't concentrating on wandering thoughts ;-)