There’s a new sleep trend making waves: taping your mouth shut at night. Advocates say it can help you breathe better, sleep deeper, and even wake up more energized. But is it safe -- or could it put your health at risk? Sanjay breaks down what the science says about this viral “hack” and what doctors want you to know before you try it. Plus, a listener asks about calcium supplements and testosterone for bone loss.   This episode was produced by Jennifer Lai  Medical Writer: Andrea Kane Showrunner: Amanda Sealy Senior Producer: Dan Bloom Technical Director: Dan Dzula Executive Producer: Steve Lickteig Learn more about your ad choices. Visit podcastchoices.com/adchoices