I live at an apartment and we have laundry facilities but its 1.25 to dry and 1.50 to wash so I wash my sheets maybe every 2 months? I shower before bed too because I'm not waking up with enough time to do it in the morning and I guarantee you with as cold as I keep my room I dont sweat at night. However, theres already enough junk floating around you get covered in stuff right after you shower anyway.