Do you sleep with the window open?

Hi, I will sleep with the windows open. I wan to let fresh air to come into my room. If I close the windows for whole night, the air in my room will not be good for health. Letting fresh air to come into the room is good for health.

Dear friend, During day time I used to sleep windows open. But during night very rarely and if opened many mosquitoes will be inside and will start bitting me. Hence I rarely open windows during night and sometimes very rarely I open windows if there is rain and cold wind outside I like to have the breeze of that cold wind and would like sleep.

Yes, I like to sleep with open window. But now it's too cold outside and it's cold in my flat. So I decided to close the window as it would be better.

Yes I sleep with the windows open. My apartment unit is high up so with open windows, there's not a need to turn on the fan. Most of the nights my husband and I sleep without turning on the fan. That's because there's cool breeze at night.