Originally Posted by
goldfinch
Count your calories. Figure out how many calories you are burning (keep in mind the calculation is going to be very rough).
http://www.caloriesperhour.com/index_burn.php
Run a deficit of 500 per day (either through exercise or reduced calories) and you will lose a pound a week.
I plugged my information from my commute on Saturday and it said I burned 834 calories. My Garmin 500 said 450 calories burned. Quite a difference, the website calculator said I burned 85% more.