I'm afraid to fail yet again, but here we go. I'm just not sure how I'm going to burn over 3,500 calories per day to shed 2 lbs a week. When I walk 2 miles in an hour, I only burn 400 cal. I have a bad back and the doc told me to just walk for now and don't use any machines. I did start a Zumba class one day a week, but…
