D Denis54 macrumors regular Original poster Mar 24, 2011 101 0 Jun 8, 2021 #1 When I look at Heart Rate data on my phone I see short vertical red lines as well as my maximum and my minimum heart rate. However, a few lines have also a longer grey section. I would like to understand what these longer gray lines mean. Attachments Heart Rate.jpg 62.1 KB · Views: 133
When I look at Heart Rate data on my phone I see short vertical red lines as well as my maximum and my minimum heart rate. However, a few lines have also a longer grey section. I would like to understand what these longer gray lines mean.