The other night when I went to bed I was so cold. I'm always cold when I get into bed; even in the summer. I don't know what's wrong with me. So I pulled a pillow down against my back and snuggled up against it. It actually kept me warm.
Ecclesiastes 4:11 says,
"Also, if two lie down together, they will keep warm.
But how can one keep warm alone?"
I guess if you're me, you use a pillow.