No.40030
            
         >lust inducing image
>time wasting question
 No.40033
            
         does it doe?? I heard coomers love to make this point, of course masturbation is unethical and personally find it repulsive, but i wonder if its even true. Furthermore if its more effective than simply just stroking a metal rod for 15 minutes a day.
 No.40034
            
         No, it is a low intensity "endurance" activity, comparable with marathons. Marathon runners don't build muscle, so no.