I have been using the Arc Trainer at my gym for an hour daily, and my HRM says I burn around 700 calories each time. Is anyone else using this machine in their weight loss journey? I'd like to hear if so. Also, I'm NEVER sore after I use this machine. I was on it for an hour and a half on Saturday, burned over 1000 calories, and there was not a sore muscle in my body the next day. This seems odd.... is that how it is for other Arc Trainer users?