There's a trap in starting the physical excercise in order to lose weight. If you have overweight, you are already used to eating more than you burn. And then...
A person who has not been an active mover usually hugely over estimates the energy consumption during exercise. After a 45 minute walk-jog-walk-jog and some sit ups he eats five times more than what he's burned.
I'm lightly built and my feet don't allow jogging on hard surface. Ten years ago, when I bought a ... what do you call those in english? ..like a watch that registers your pulse, energy consumption and everything you need to know ..
Anyways...I was shocked to find out that a 4 mile intensive walk-jog (pulse between 110-125) and 45 minutes of 3 sets of sit-ups, push ups, pull ups, some back- and leg-exercises and stretching, spend about as much calories as there is in
one moderate sandwich and a bottle of beer.
So, in my experience, before eating after exercise, one should always wait about an hour and sip a little something, with a bit of energy, maybe take an apple or something. That helps to keep you from over eating. DO NOT take a big meal in front of you!
The energy that keeps you moving you eat a couple of hours before the exercise.
The ones who are active, knowledgeable movers do know these things, so this is for the ones who think they are sporty if they move two hours a week. Self deception is tempting.