Hello. I would like to know - what is Brisk activity? Walk with speed over ??? km/h? Normal walk hearth rate over ??? bpm? Something else? I will tell you why I'm asking: My watches counts my slow walking with my child to the kindergarden as an excercise. I already tried calibration recommeded by Apple. Im 37yo with good condition so there is no need to appreciate my slow wolking as a brisk activity. I also asked officially at discussions.apple.com but my question was deleted.