The Accuracy of Daylight Tracking on Wearable Devices

The accuracy of the health app in tracking time spent outside, even when wearing sleeves over the watch, is baffling. The app can detect even a two-minute walk outside. The narrator appreciates the app's ability to show correlations and track time spent in daylight, which is a fantastic addition. They believe that for most people, the lack of time spent in daylight can be a contributing factor to sadness. The narrator suggests that maximizing misery is a common issue, and recommends a book on the topic. They suspect that others like them also recognize the importance of being happy and spending time outside.