Mouth taping is the practice of taping your mouth closed with skin-safe tape to force you to breathe through your nose instead of your mouth. The goal of mouth taping is to reduce the negative side effects of mouth breathing and reroute your breathing through your nose. Breathing through your nose may have various benefits that breathing through your mouth doesn’t have, including lowering blood pressure, filtering allergens, and regulating the temperature of your breath. However, studies done so far appear inconclusive and the jury’s still out on whether or not mouth taping is beneficial. Taping your mouth shut impairs your ability to breathe in full, deep breaths, and you could also experience skin irritation, an allergic reaction, or rash from using the wrong kind of tape. It is never advised to use duct tape or any other kind of tape on your body for any reason. Mouth taping could cause an allergic reaction from the tape or a skin irritation or rash, so it is recommended to talk to your doctor before starting this practice. Despite claims that mouth taping can improve snoring, give you more energy, deepen your sleep, boost your immunity, lower your blood pressure, and even improve your appearance, there is not enough scientific evidence to support benefits from mouth taping, and it can be dangerous. Mouth breathing is a backup, and if you can’t breathe through your nose while you’re sleeping, your mouth will naturally open so you can take in the air you need. Therefore, it is more important to figure out why you’re sleeping with your mouth open and get to the bottom of that issue than it is to force yourself into nasal breathing with tape.