Do I regain calories that I burn during exercise?

Eating right is actually more important than just eating less and eating less useless calories and more often is the key for a slimmer waist. Have a higher intake of protein, fiber and good fat, and a low to moderate amount of carbs. Try small meals instead so you get sufficient energy. Don’t lose muscle mass and don’t spike the blood sugar rate as that attracts more sugar into the blood stream, which in turn becomes fat.