People have been talking up mouth-taping lately on TikTok and Instagram as a home remedy for snoring, insomnia, dry mouth, and other sleep-related issues—and the trend seems to be sticking. “Mouth-taping is very popular right now,” says Dr. Abhay Sharma, an assistant professor and ear-nose-throat doctor at the University of South Florida who monitors such trends, knowing his patients will bring them up. For the uninitiated, mouth-taping is exactly what it sounds like: the mouth is taped shut, forcing the nose to take in air instead.