If you think that's hard, my September challenge is setting a goal of 53,300 calories.The September activity award is not going to be easy. I usually don’t do much activity during the weekend as I work outside all week and it has been a hot one here around central FL. September activity challenge is to get 18,700 calories burned. That is about 633 calories a day. I come close to that during the week, but not the weekend. I’ll have to start using my mountain bike a lot more during the weekend!!!