I started at 160 and am now 200lbs. My father is 150lbs, I have surpassed my genetic limit and I dont ever see myself shrinking back down to 160 even if I never ran another cycle. Maintaining nutrion and exercise you can keep your gains, even without gear. I dont know about upper limits say above 225, but since that is my goal time will tell. With all the growth I have run its made a permanent change in my structure. And I can maintain 200lbs very easy now, even without eating 5-6 times a day.