If you’re looking for a better sleep, get out of bed when you wake up. No excuses. Falling back asleep actually confuses your body. When you smack the snooze to get another 15 minutes, you actually fall into a deeper sleep than before. When you finally rouse yourself, it just takes more time to feel fully awake. Grouse all you want—but the snooze button is not your friend. Another tip: Let the light in. Exposure to natural light also helps you wake up more quickly.