On rare occasions when I am drifting upward into wakefulness, I am trying very hard to wake up (usually because my bladder is saying, "I need to be emptied!")
but sleep still has such a powerful hold on my brain that I am unable to force myself to full wakefulness. I cannot force my eyes open, nor move a muscle, and I end up drifting back into the dream state for a few minutes. Eventually, the bladder wins and forces my brain to enough wakefulness that I am able to open my eyes and move a bit and then I am able to stay awake.
It's not the inability to move a muscle or even open my eyes that is getting to me--it's the overpowering sleepiness
that still has such a grip on my brain when I know I should be shaking it off and getting out of bed.
Does anyone else experience this? Is there a name for it?