@willy

2) Aerobic Capacity (Zone 2 Cardio) Cadence: >3 hours Zone 2 Cardio a week - split into 3-4 of 45-60 mins each Zone 2 = 60-70% max heart rate I find a chest heart rate monitor useful as the one on my Garmin watch is not accurate https://www.garmin.com/en-US/p/770963

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