Is it possible to manually change the limits of the 'Activity Zones," i.e. Fat Burn, Cardio and Peak? I'm well aware that you can set a Custom Zone. That's not what I want to do. I take a medication that slows your heart rate whether you're exercising or at rest, which means that the exertion at a given heart rate is actually greater than what my Fitbit Sense is giving me credit for. The formula for max HR is also no good, due to the lower HR even at maximal exertion. Any knowledgeable help would be most appreciated.
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