Surprise, You Are Probably Not Washing Your Sheets as Often as You Should You may need to re-evaluate how frequently you tackle this chore. Source: Zac Gudakov/UnsplashArticle continues below advertisementHow often should you wash your sheets and blankets? If you're someone who dreads the process of washing your sheets and puts it off for as long as possible, have we got news for you: you're probably not washing your sheets enough. But, according to the Cleveland Clinic, you could be messing with more than your REM cycle by skipping your weekly wash day. Worst of all, the material that comes off your sheets while you sleep becomes the perfect breeding ground for bacteria, which can impact your health.