Like most new technology, the Apple Watch has its fair share of bugs and glitches. A common problem that you'll run into is a frozen screen due to a malfunctioning app. While this can be frustrating, the solution can be as simple as a quick reboot, so let's show you how to do it.
For the less serious issues, a quick reboot will be fine. Power down the device by pressing and holding the side button—not the Digital Crown. A screen will pop up displaying your options: Power Off, Power Reserve, or Lock Device. Turn your Watch off by sliding Power Off to the right, then power it back up by holding that same side button.
If your device is seriously frozen and won't respond to the side button action, then press and hold both the side button and Digital Crown at the same time for about ten seconds, until the screen powers down and the Apple logo is displayed.
The occasional glitch is the price we pay for our bleeding-edge toy or gadget, but at least there's a solution that can get you up and running painlessly.