Research shows that getting more sleep makes us thinner, healthier, smarter, and even more attractive. But many of us spend our nights tossing and turning. And if you've been there, you know that there are few things more frustrating than lying awake all night and wishing for sleep. Dr. Andrew Weil has the perfect solution: 4, 7, 8. He shares a simple breathing pattern that can help you fall asleep instantly.