One sign you got a good night’s sleep is waking up shortly before your alarm goes off. This is a sign that your body has developed a sleep-wake routine and knows when you’re expected to be awake. It’s also good if you feel alert rather than tired when you wake up and start moving around. Another sign you’re sleeping well is waking up at most once during the night, to use the restroom or get a drink of water. If you wake up more than once or have difficulty falling back asleep, you might need to improve your sleep hygiene.