Professional Reference articles are written by UK doctors and are based on research evidence, UK and European Guidelines. They are designed for health professionals to use. You may find the Baker's Cyst article more useful, or one of our other health articles.
All-day battery life is based on 18 hours with the following use: 90 time checks, 90 notifications, 45 minutes of app use, and a 30-minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours.
As long as you're wearing your Apple Watch it will check and log your heart rate by itself every ten minutes. All the data Apple Watch collects about your heart rate is then transferred automatically to the Health app on your iPhone.This happens more frequently during a workout, unless you make adjustments.s long as you're wearing your Apple Watch it will check and log your heart rate by itself every ten minutes. All the data Apple Watch collects about your heart rate is then transferred automatically to the Health app on your iPhone. This happens more frequently during a workout, unless you make adjustments.