Why did all of my heart rate zones change? On 1/10/23 my Zone 5 (max) was >168. Beginning 1/11/23 Zone 5 (max) changed to > 140 and all other zones changed as well. Birthday/age has nothing to do with those dates
Why did all of my heart rate zones change? On 1/10/23 my Zone 5 (max) was >168. Beginning 1/11/23 Zone 5 (max) changed to > 140 and all other zones changed as well. Birthday/age has nothing to do with those dates
