Activity HR Zone jon.roberts220161@gmail.com 28/05/2026 Heart Rate ZoneOwn System 3 Zone System using Maximum Heart Rate (Version 3)Own System 5 Zone System using Maximum Heart Rate (Version 1)Own System 7 Zone System using Maximum Heart Rate (Version 1)Garmin 5 Zone System using Maximum Heart Rate (Version 1)Coros 6 Zone System using Maximum Heart Rate (Version 1)Coros 6 Zone System using Threshold Heart Rate (Version 1)Coros 6 Zone System using Heart Rate Reserve (Version 1)OriginNo of ZonesHR MethodVersionDetailCoros6Heart Rate Reserve1Main Coros Threshold SystemZoneLower %Upper %Recovery0%59%Aerobic Endurance60%74%Aerobic Power75%84%Threshold85%88%Anaerobic Endurance89%95%Anaerobic Power96%100%