question: Dear Doctor,                  This is USMAN from Muscat I just want to know I am 34 Unmarried I saw blue movies every night and I masturbate twice daily or almost thrice daily but I ma athelete sports man I just want to find out whetehr its good or bad for health but I really really feel pleasure in mastubating but then again I am afraid that it doesnt effect my stamina can you please tell me in detail some body told me that it effect eye sight and back pain because I am telling you very frankly that after masturbating 3 times still I feel very desperate I can easily mastubate 7 to 8 times daily I do 4 to 5 km running dailyBut plesae tell me that mastubation will not effect my staima because I am a professional runner.Your early responce shall be hihjy appreciated