Hi everyone, I received my first Apple Watch today, the Apple Watch Series 2; pretty excited! I have a few questions as I've never used an Apple Watch before: - In regards to the use of background app refresh on the watch, is it essential that I have it enabled? For example, if I turn off the background app refresh for weather, does that mean when I view the weather stats on my watch face that it'll be old info? Furthermore, if I turn off background app refresh for an app on my iPhone, does that also affect the same app on the watch? I'm a bit confused about the advantages and disadvantages of having background app refresh turned on or off, in general, and particularly on the apple watch. - How does the heart rate feature work? Is it constantly measuring my heart rate even when the app isn't open? Also, is there any tips or tricks that a new, first time Apple Watch owner should know or would benefit knowing? Any help/suggestions/advice would be greatly appreciated! Thank you!