Dragonman, Buckeye Guy, thank you very much for you friendly advices, they are totaly correct. But I am specific kind of man- I can not stop my passion about heavy bows, it is stronger than me. I do not take drugs, gambling or something like that but heavy weights are my passion, simply unstopable. You are right about potential body damages, I know that but....
Maybe if MR archers could do it all life and die from ages, maybe it is not deadly but could be painfull, for sure, after some years.
One more time- thank you my friends!!!