Last year I bought a Garmin Forerunner 245 smartwatch. I have notifications totally disabled, I don’t really use it as an actual smartwatch. But I’ve found its

Last year I bought a Garmin Forerunner 245 smartwatch. I have notifications totally disabled, I don’t really use it as an actual smartwatch. But I’ve found its measurements of my heart rate and stress levels (via heart rate variability) really interesting and useful for planning when to exercise, working out why I can’t get to sleep, and monitoring illness. I had an incident involving significant blood loss over a several week period and it was very useful having such detailed heart rate data throughout.