<s>[INST] Sir i m 26 yrs old male.i have been masterbating since 12 yrs.now i feel my semen has losen its quality & perfectness.after a little excitement it comes out & often in sleeping i lose my semen sir plz hlp me.giv me ans to my mail YYYY@YYYY . [/INST] Hi welcome to Chat Doctor. I have gone through your question. As you are 26 and masturbating since 12 years is absolutely no reason to worry. Is absolutely normal. Ejaculate early is called premature ejaculation. Is also not a medically abnormal. Lost semen at night sometimes it happens normally. So no need to worry regarding anything. Hope I answered your question. Would be happy to help you further. Take care. </s>