"A truth that's told with bad intent/ Beats all the lies you can invent". William Blake
Have to say that one of the benefits of exercise (besides making you feel better), is that you can up your intake of calories and still lose weight or, at the very least, maintain it.
Did one hour of weightlifting last night, followed by two hours of Badminton and a sixty mile club run today, the first ten of which I rode at somewhere close to my threshold because I'm training for my first ever time trial.
The upside of all that is that I can eat whatever I want for the rest of the week-end to my stomachs contents and not put on even a gram of extra weight.
As someone else said, calories in balanced against calories out; the more you do the further you can tip that scale in your favour.