Each winter I have a terrible battle keeping 5-10 pounds off during the winter. The problem occurs when I can't ride outside due to ice and snow (notice I didn't say cold since I'll go out as long as it's double digits above zero). I belong to a gym but this year it is not working that well. How do you folks keep the weight down or off during really bad weather. I ride a stationary bike 3 or 4 times a week for 30 -40 minutes each time. Any idea?