You didn't turn the heating up. The room is fine. And still, sometime after midnight, the blanket that felt perfect at 10pm is the reason you're awake.
For a lot of people, that isn't a you-run-hot problem. It's a material problem.
Most blankets are built to trap heat. That's the point of them. Fleece, polyester fills, microfiber throws, even some heavy cottons: they hold warmth against your body and they don't let much air through. If you're a hot sleeper, that design is working against you all night.
Muslin cotton does the opposite. It's a loose, open weave of 100% natural cotton, which is why hot sleepers are swapping their old blankets for The Muslin Blanket.
Here's how to tell if your blanket is the reason you keep kicking the covers off.