I’ve used heart rate straps for over a decade in conjunction with various Garmin Forerunners. But for the last year or so they just haven’t worked for me. First thing that happened was I lost my Wahoo TIKR, and bought a new one. And it just never worked right either with my Forerunner or my phone. I took it up with Wahoo and they replaced it, and it still didn’t work. It works fine for my wife, but not for me. So I bought a Garmin HRM Dual, and it never displayed any sort of heart rate on my phone (Bluetooth), and would only work with my Forerunner (Ant+) for about an hour and then it would start dropping off to around my resting HR even though I was working hard. I also bought a Fenix 6X around the same time, and the HRM Dual was no better with it. The wrist HR on the Fenix wasn’t terrible, but it wasn’t all that close to the strap heart rate when the strap heart rate was working, and lagged terribly when increasing load like doing an interval or climbing a hill.
- using electrolyte gel instead of water on the pads of the strap
- Replacing the battery on the HRM dual
- Shaving my chest under the strap
- Losing 40 pounds
None of those have appreciably improved the heart rate functionality. I’m ready to give up on heart rate and go back to training and racing by feel.