Reducing 1-2 Pounds a Week - as part of the expert series by GeoBeats. If one wants to lose one or two pounds per week, the first thing you have to do is you have to really know how many calories you need. It is really a basic equation. So, the best thing is try and find a registered dietitian or someone that you can speak with so they can tell you, OK, how many calories have you been eating? Are you involved in any exercise, activity? And have a good estimate as to where you need to start from. Once you have the lower amount of calories that can help induce that one to two pounds per week, then what we usually recommend is trying to have some type of physical activity because physical activity is what is going to help you expand those extra calories as well. So, our usual recommendation is about three times a week, 30 to 45 minutes of really any activity to get you moving.