I came across a major bug with GCM..
if you go into GCM, select your device, user profile, set your resting heart rate. Make your zones based on RHH. Sync your watch, then go into user profile change your resting heart rate, sync then go into heart rate zones. For me it changes my % to 1-3% for zone 1, 4-6% zone 2. Etc… when it should be 50-60% zone 1, 60-70% zone 2 etc.
of course this throws off my zones in running.
