Today went for a run in Garmin hart rate Zone 3.
After a few hundred meters I was already way to high in Zone 4.
Apparently the watch changed the zones but also really drastically (Zone 3 and 4) without warning or indication.
Zone | Before | Now |
5 | >162 | > 158 |
4 | 154-161 | 140-157 |
3 | 144-153 | 123-139 |
2 | 130-143 | 105-122 |
1 | 105-129 | 88-104 |
Only indication I have is that the watch said it updated Bluetooth drivers on the watch.
Anyone have an idea why the watch did this (FR 945)??