Pjs. It’s a well known phenomenon that as your body temp cools down, this triggers sleep, and yet I find myself waking sweaty nearly all year round. Pjs keep the sheets cleaner. Bedding I keep to the absolute minimum for the season/temperature, and in layers so adjustable. And I MUST have an open window all year round. I’ve frequently been too warm to sleep, but rarely if ever too cool to sleep. Maybe I’m weird.