Track your sleep with your Apple Watch
I was surprised to learn the Apple Watch hasn’t been the best sleep tracker since I’ve spent all this time doing so with a Samsung Galaxy Watch. (I used the first-gen Galaxy Watch Active when I was chest-feeding my newborn to wake me up every three hours and track whether I ever hit a REM cycle in between feedings!)
WatchOS 9 will upgrade the sleep tracking feature on the Apple Watch to take stock of sleep stages. You’ll be able to see how long you were awake when you hit a REM cycle and if you managed to hit deep sleep throughout the night.
