Is it possible to simultaneously gain muscle and lose fat, while retaining the same bodyweight? I want to lose fat without losing weight.
Of course it's possible. That's the whole idea of bodybuilding, to lose fat while gaining muscle. You may lose 10 pounds of fat and replace it with 10 pounds of muscle, so your weight gain will be zero but your body will look totally different. The secret to gaining muscle while losing fat is to train as I suggest in my courses, with little rest between sets as possible and working for a maximum pump in the minimum amount of sets.
Your diet should be high in protein and nutritious food. Eat 6 small meals a day as opposed to 3 large ones. Take amino's with your meals and in between meals to keep you in positive nitrogen balance and to keep your blood sugar levels elevated.
(Musclemag Magazine October 1988)