I have to comment on these last two posts. I don't do yoga, ( I meant to add this) but I do know that concentrating on my breathing helps, making sure I breath in deep through nose andout slowly through my mouth helps me fall asleep, probably b/c it gives something/nothing to think about, and poof asleep. And the pillow over the head has always relaxed me, but if I sleep that way have to put one arm over it, and ends up waking me,b/c it falls asleep or gets cold or hurts, but the blocking out light and muffling noise is why I liked it, so that is why I gave the earplugs and eye mask a shot. So I definitely agree on the pillow thing as well. Just seconding what y'all said.