- After properly working for 3 years, My marq expedition all of a sudden started multiplying intensity minutes by 10x, both daily and weekly (I usually achieved 250/week now it counts 3000 / day!!). I checked all the other settings (heart rate zones etc) and nothing has changed. Simply it seems the Automatic calculation of Intensity minutes doesn’t work anymore. I have reset to factory settings twice. No change unfortunately. Any help ?