its kind of educated sense that you're body can only MAINTAIN a certain amount of muscle based on your natural test amount or if you're on foreign test 24x7x365.

The guy is asking how much muscle can he maintain after cycles and expect to keep in the long run. based on having 50-70mg/test week age 30+.

I would say at 5-10 to 6-0 you could keep 250lbs at 8%BF while natural. granted proper diet and training...