When you consume lot of calories your weight will increase, but when you consume what your body needs, there will be no problem at all.
Exercising is doing a good job to increase powers that come out of our body, and this way it consume fats.
Many Studies is telling us that exercising doesn't boost metabolism during the exercising time only, but after that for a long while, so this will allow burning more calories, including anything you eat after the exercises.
How many calories do you need:
Man: age x 24 = calories
Woman: age x 23 = calories
2.2 pound = 7700 calories, if your body need 1600 and you eat 1200 and you burn 400 calories with exercising, so you are going to loose 2.2 pound every week.
So count your calories and plan how to loose your weight, in general you can take over your appetite by changing habits and having healthy meals like legumes, fruits and less carbohydrate, and keep your metabolism and practice sports to preserve your fat burning rate, and eat slowly with chewing well to not eat too much.