Although I’m currently running without using technology such as HR monitors, I remembered that I meant to write a post about a quick fix for issues I used to have, and have seen others reporting, with Polar H10 heart rate monitors. It relates to random drops in heart rate during a run, as seen towards the end of this long steady run;
When the strap was new it worked perfectly for a while, but then I’d start to see these dropouts in every run after a warm up. In an effort to resolve it I had tried replacing the battery, but would end up having to replace the strap, only for the same problem to return within 3 to 6 months. Others have said that this is what they do, claiming that the strap is a consumable item that needs regularly replacing, but that seems wasteful and doesn’t sit well with me.