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Charge 5 - HR running vs HR biking

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‎08-20-2023 12:08

‎08-20-2023 12:08

I'm 63 (male) in OK shape (Cardio Fitness 45). I have a Charge 5 and have a hard time believing the HR reading when I run. It seems accurate when I bike, but totally off when I run.

 
I always wear my watch on the left wrist (non-dominant). I thought I should try the left wrist and here's the difference: https://photos.app.goo.gl/7Ps4JQ3LX61yqQVj7  
 
Left wrist - 5:56/km pace - 169 bpm
Right wrist - 5:36/km pace - 159 bpm
 
At 63, I doubt very much that I can hit the 180s. Here's a typical bike ride. That seems more like the way it should be if I disregard the 194 peak. Any thoughts?
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