I've had trouble sleeping lately. So has John. We both like cold bedrooms, and we're plenty warm under our comforter especially in this mild winter. So it surprised me when John's solution turned out to be a nightcap--no, not that kind of nightcap, a literal nightcap. He's taken to wearing a wool watch cap to bed. It worked. "You should try it, honey." Shouldn't we just warm up the bedroom? "No, that's too hot. I'm telling you, try it."
Well, I didn't want to wear a watch cap. So I hit upon the hat to the right. I knit it back before we got Calcifer and we had the heat down so low I could almost see my breath. Here's the free pattern at Ravelry; it makes for a darling, quick-to-knit cap for anywhere, not just bed.
Reader, it worked. I'm sleeping much better wearing the nightcap. I wouldn't have thought so, would you? So if you're having trouble sleeping, grab a watch cap or something like and try it.