I'm 42 and used AS for three years straight around 20 years ago. Kept alot of muscle not size. But after rotator cuff and tennis elbow surgery I have decided to use again for at least the next couple of years. I am going to try to build up again before I get too old (last hurrah, maybe). My base is much stronger and bigger than before so I will be taking low doses. I know I not the oldest but probably one of the older guys.