ive read at some other website that tbol filters through ur kidneys could this effect u in the long run. i gained 10 lbs off a 2.5-3 week tbol cycle and i was wondering if its a good idea to do a 2 week on 2 week off cycle with tbol on and off until i get 20 lbs off it. ive heard the germans did 3 week on n off cycle with tbol in the past.