clarification
I am NOT an expert by any means BUT from what I
understand
Your weight depends on the balance of calories you take in (consume) versus the amount of calories you burn.
If you take in more calories than what your body NEEDS, then you gain weight. If you take in less calories than what your body needs, you lose weight.
You seem to be only counting the calories you are burning through excercise.... your body also burns calories for basic needs like breathing and circulating your blood....the calories you use while at "rest" are your basal metabolic rate. (75 % of your calories are used up here).
You also burn calories processing the food you eat (digestion) this accounts for about 10% of your calories burned...
Physical activity is the rest of where your body burns calories. (about 15%) playing tennis, walking to the store, shopping, chasing after your kids and "working out"—
So long story short, I think in order to lose weight you need to create a deficit...meaning if you take in 500 calories less than you normally eat when you are maintaining your weight and you burn 500 calories more a day.. by means of excersise... you are in reality creating a deficit of 1000 calories per day... which SHOULD mean every 3.5 days, you lose a pound of fat... that kind of makes sense because "they" whomever "they" are

say that you should not lose more than 2 pounds per week on average...
So there it is... my disertation on .... WHAT WAS YOUR QUESTION AGAIN???? ha ha just kidding... sorry about the long entry!!
Oh by the way this info above is from the mayo clinic... I believe... that is where I read this...