When I'm exercising, often my watch isn't registering a heart rate. This never used to happen and I have the watch fastened firmly and in the correct place on my wrist. On a recent run, it logged my heart rate as being 86 BPM, which is physically impossible and just over half the heart rate that I usually log for that speed and distance. Please advise.
Apple Watch
The first (and simplest) thing to try if something isn’t working right is to restart your Apple Watch and its paired iPhone. If necessary (device not responding), try a forced restart. Both methods can be found here:
How to restart your Apple Watch - Apple Support
Restart your iPhone - Apple Support
If that doesn't help, the next steps would be to unpair and pair your watch again and restore from the backup just created. This deletes all temp and corrupted files and re-indexes the file system.
Unpair and erase your Apple Watch - Apple Support
Set up your Apple Watch - Apple Support
Tips for a more accurate heart rate reading.
Your heart rate. What it means, and where on Apple Watch you’ll find it. - Apple Support
You can further improve its accuracy using these tips.
Get the most accurate measurements using your Apple Watch - Apple Support
The first (and simplest) thing to try if something isn’t working right is to restart your Apple Watch and its paired iPhone. If necessary (device not responding), try a forced restart. Both methods can be found here:
How to restart your Apple Watch - Apple Support
Restart your iPhone - Apple Support
If that doesn't help, the next steps would be to unpair and pair your watch again and restore from the backup just created. This deletes all temp and corrupted files and re-indexes the file system.
Unpair and erase your Apple Watch - Apple Support
Set up your Apple Watch - Apple Support
Tips for a more accurate heart rate reading.
Your heart rate. What it means, and where on Apple Watch you’ll find it. - Apple Support
You can further improve its accuracy using these tips.
Get the most accurate measurements using your Apple Watch - Apple Support
Heart Rate Monitor Malfunctioning
