Now more than ever, we all need to do what we can to stay healthy. Getting enough sleep each night is crucial to good health. If you are not getting a restful, deep sleep each night, however, you could be throwing off your body’s natural sleep rhythm. One big reason it is often difficult to get a good night’s sleep is this: Your bedroom may not be dark enough to allow you to fall into a deep sleep. Thankfully, there is a simple fix – swap your current window treatments for blackout shades.