You'll want to know this..

[kadmus]

If you stop training or cycling your going to drop weight.

Your body will almost certainly need an elevated androgen level to attain the added mass.

If you stop training sure the weight will go down because you don't run blood in your muscles anymore with training but once you go back to the gym and train your muscles will return to its prevoius state, no need to cycle again

[BJJ]

If you stop training sure the weight will go down because you don't run blood in your muscles anymore with training but once you go back to the gym and train your muscles will return to its prevoius state, no need to cycle again

That is called muscle memory.

In any case, things are a little more complicated then that.