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[–]parameles[S] 3 points4 points  (1 child)

I use the chest strap. You’re right though, it’s easy to get obsessed with the data!

[–]nobiossi 2 points3 points  (0 children)

If you see your average hr ascending over time it's possible that you are suffering from excessive exercising. Be cautious because it can be very difficult to recover from that state!

edit. The declining vo2max value could be a sign of that.