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Smartwatches (SWs) can continuously and autonomously monitor vital signs,including heart rates and physical activities involving wrist movement. Themonitoring capability of SWs has several key health benefits arising from theirrole in preventive and diagnostic medicine. Current research, however, has notexplored many of these opportunities, including longitudinal studies. In ourwork, we gathered longitudinal data points, e.g., heart rate and physicalactivity, from various brands of SWs worn by 1,014 users. Our analysis showsthree common heart rate patterns during sleep but two common patterns duringthe day. We find that heart rate and physical activities are higher in summerand the first month of the new year compared to other months. Moreover,physical activities are reduced on weekends compared with weekdays.Interestingly, the highest peak of physical activity is during the evening.

Longitudinal Analysis of Heart Rate and Physical Activity Collected from Smartwatches