Should I add My Exercise?

MFP already builds in a deficit for you so you should eat some if not all of your exercise calories back. You need to try both and see what works best for you. It would be nice if everything were black and white when it comes to weight loss but as we all know there are MANY grey areas. At first I was not eating my exercise calories back and was losing weight but I had about 50 pounds to lose when I started and the closer I get to my goal I am finding out that I have to eat more to lose weight. Right now I am eating back all my exercise calories and I am still losing about 1.5 to 2 pounds a week.

You should eat close to your calorie goal each day including eating back most of your exercise calories. As has already been mentioned, the calorie goal that MFP gives you each day already includes a deficit to lose weight. By eating too far under this goal you may slow or even stop your weight lose. Many people do not realize that eating too few calories can be just as bad for losing weight as eating too many.