The Apple Watch is a deceptively powerful device. Here's a guide on how to use your new Apple Watch, from learning its ...

To use the iPhone's sleep timer, set a time in the Clock app's timer, and set the When Timer Ends option to Stop Playing.

To explore the questions of what time is and how we measure it, host Dr Alfredo Carpineti is joined by Dr Emily Akkermans, ...

This test uses saliva and connects to your phone to deliver quick insights into your stress hormones -- no needles needed.