I'm 19 yrs old, i started porn at the age of 10 and just started to masturbate at 13. Out of curiosity, i discovered this. At first i had this feeling of guilt everytime i just finished MO but then after about a year of constant jerking, i felt no more guilt or whatsoever. For 5 years I have been constantly doing this with moderate usage of porn. As i entered my college years i started to feel that my performance is dropping. I have hard time concentrating in studies. Everytime i read it just like i havent understood every word. I just read word by word but i have a very hard time comprehending. I searched the internet and researched if masturbating affects the brain or something, different sides say that it ain't bad some says it affects your brain thru chemical imbalances and those things hormones something like that. I got afraid and started looking in the internet for people debunking this fact just to get rid of the thought that i have been destroying my brain for 5 years. I discovered this site and read other posts similar to my condition, I want to start now, I can' tell anyone of this so i started saying it here now just to keep track of my progress. I hope i can totally get rid of PMO. I hope this is the answer to me being focused more.