Hi, I m a male of 26 yrs old. I started doing masterbate since the age of about 17. I did excessive masterbate 4-5 times a week. then my health broke down completely and I got nightmares too. about 5 yrs before I started doing physical exercise. and for about last 3 yrs, gradually I have been loosing my sexual powers. like I m loosing all my desires too. now my penie is very weak, and I feel that it has lost its size also. and ejacuation happens very quickly. mostly I m loosing my sexual desires. I m really in a great mental depression about this. plz give me some suggestions and medical advice whether it is solvable or not. hoping ur cooperations.