New Sleep-Tracking
One of the best features watchOS 7 will have has to be the Sleep app. After years of waiting, you can finally track your sleep with your Apple Watch without any third-party apps.
The Sleep app uses the Apple Watch’s accelerometer to keep track of the micro-movements you make, which give a signal of respiration during your sleep. The Sleep App then uses that data to show you exactly how much time you actually slept and how much time you spent in bed. The watch will also help keep track of your heartbeats when you sleep.
You’ll have other features, like setting a sleep goal, waking up via a haptic alarm, and an iPhone feature called Wind Down, which will help you create a bedtime routine so you get to sleep quicker and sleep more soundly.