REM sleep is an hot, warm, rush. Your body is hugely noisy, with patchy waves of sharp, hot tingles racing through your body like sunspots. At first notice, it is painful, but then you realize it’s wonderful. Your whole body is completely paralyzed. You could no more lift your eyelids than push over a grown redwood, even as the static roars through your body like a thousand freight trains.
Your body is flushed, and hot, like a tremendous fever, or the edge before the peak. You can hear with perfect clarity, but the sound weave into the tapestry of imagination with artful ingenuity.
The light, if any, beats through your closed eyelids with tremendous force, bright and heavy. Your eyes move strongly, sharply, as if having a will of their own.
And then it fades, into the warmer darkness of dreams, inspired by memory and later, imagination.