Well... it already happened a lot with me, after i started to learn about astral projection and meditation techniques.
Usually i was lying in my bed, trying to astral project or meditate, then i would "awake" and "open my eyes". I could see my room as i usually do, but i was unable to move and also i got a strange feeling in the eyes, like if i were forcing them to open but were unable to do it, like if i were deadly sleepy and couldnt keep them open... so i remained in this state for a while, until i actually "wake up", or rather, open physically my eyes, that were closed indeed, and be able to move my physical body.