Details: Startup @SleepGuard trains you not to grind your teeth in your sleep.

The SleepGuard biofeedback headband enables people to train themselves out of clenching and grinding their teeth in their sleep, thus eliminating TMJ disorder symptoms, including migraines that come from nighttime clenching. In a few days, people learn to respond to the biofeedback sound in their sleep so they can learn their way out of clenching without having to wake up.