Besides health tracking, the watch’s new optical heart rate sensor should make a difference in capturing exercise data, which I tested while hiking, running, and lifting. In all instances, it performed comparably to the Series 3—good for most endurance training efforts. Optical heart rate sensors can get tripped up by cold weather and jostling, which I tested by hiking at elevation. The Series 4 captured the workout without issue.

On the software side, watchOS 5 continues to refine the watch’s UI. Regardless of which Apple Watch you own, you’re going to want to update the software. (The latest update is available on the Series 1 and onward.) The new software offers grouped notifications, automatic workout detection, podcasts, and a Walkie-Talkie app, all of which make the watch more pleasant to use. I found myself unexpectedly excited for automatic workout detection—if you didn’t measure it, did it really happen?—and runners will love the new rolling mile measurement, cadence, and target pace notifications.

Sourced through Scoop.it from: www.wired.com