When your tongue cant rest up on the roof of your mouth, it falls back during sleep and partially blocks your airway. That vibration you hear? Thats your body working overtime to breathe., The good Tongue Wearable Finger Sleeve Vibrator Romantic Depot I bought one of these, can't even remember what it's called but the vibration makes my tongue go bananas DOBE Factory Diirect Supply Wireless Controller Dual Vibration Six Axis GamePad for PS4 Game Console Accessories