What was happening when i was sleeping?

when i was falling asleep around 2 am i felt this warm feeling all over my body i was trying not to think stuff that would freak me out like gory stuff and well i didn't but then i did then i was like slipping in and out of sleep i felt warm and i could and see the light between my eye lids and i could move then i would fall asleep again and it kept happening until this morning i think i didn't sleep at all