I have had an Apple Watch since early 2016. My challenges get more demanding each month. This month they want me to average 146 minutes a day working out. I do a lot of workouts, but I do not do them to meet the Apple challenge. If I get it that is fine, if I don't, I don't worry about it. Last month I got it by going 345 miles.The challenges are interesting, but don't bother me one way or another.