I use a vivosmart HR to record running activities.
Using Garmin Connect on the web, when viewing the detail of an activity, under "Stats" it shows Average and Max heart rate. You can also scroll along the heart rate graphs and see the HR at different times during the activity.
My issue is that the Max Heart Rate shown under stats is always considerably lower than the max shown on the graph (by 15-20 bpm).
Any idea why this is?
Thanks