My Garmin forerunner 245 wont let me change from max heart rate to lactate threshold. It won’t let me save the setting change.
Do I have to manually input the zones or can the watch calculate this automatically?
My Garmin forerunner 245 wont let me change from max heart rate to lactate threshold. It won’t let me save the setting change.
Do I have to manually input the zones or can the watch calculate this automatically?