If you’re an iOS user you know sometimes your devices can get a little buggy, and usually a great way to fix the problems is to power the device off and turn it back on. You can do the same thing on your Apple Watch.
To access to the Power off option, simply press and hold the side button. You’ll get a little screen where you can Power Off the watch, turn on Power Reserve or Lock Device.
Simply swipe to the right and your Apple Watch will power down. Once it’s done, to turn it back on, again press and hold the side button for a second or two and release it. You’ll see a faint Apple logo on your screen and the Apple Watch will boot back up.