Is it normal to sleep with just underwear?
Yep.Totally normal
Yes, it’s completely normal to sleep in just your underwear. What you wear to bed mostly comes down to comfort and temperature.
Lots of people sleep in just underwear, whether they like feeling less bundled up or tend to get warm at night. Others prefer pajamas or sleeping naked—there’s no single right way to do it.
As long as you’re comfortable and your underwear is clean, you’re fine. Pick whatever helps you sleep well (and works for the room temperature).