I've concluded that dreams are much like an altered state created from drug use. We know from REM sleep patterns that the frequency gradually decreases and shoots straight up at a certain point. It's like the drug induced altered state in that your brainwaves shoot up even beyond waking state, while dreams and the like are lower frequencies.

You are sent into a lowered trance state on the point where you become mildly drowsy and about to fall asleep. Then you keep going deeply into the trance state until you hit the lowest your brain carries and that shoots you off straight into the half-awake state. What I am saying is that the brain hits a energy mark where it completely turns off for a split-second. No energy. Then as it reboots, it goes straight into that half-awake state in which you BELIEVE you are waking up. But, coming out of a blank brain state your brain takes stock of the memories and boots up like a computer, auditory, mental, and memories, etc.

You can tell if you examine the EEG patterns and such. Always, there's a low and high amount of energy passing through the brain. So, I believe that short naps are just one reboot, because there are patterns to it. Always a low to a peak.

It would make sense since drugs also do change frequencies of the brain. Eureka!