cliffs: you stop eating and stop training, you will shrink (especially the not eating as much part)
That's the problem though, isn't it. Why do they all stop? Why does retiring from the competitive circuit mean that they all boycott the gym, stop dieting, and stop lifting or even cruising on low doses just to keep in shape?
It's because the shock to the system of not placing well and losing their monstrous size is too much for most to cope. Just shows how thin their interest in "bodybuilding" really is. It was never about being in shape or healthy or even pumping iron. It's for money and a few magazine covers, and to look like freaks in tight-fitting sweaters at night clubs.