I want to put my few cents…I have been PEing for two years now. I must say that I have NOT seen any correlation between sex/orgasm/testosterone levels and gains!
Just after the orgasm my dick seems to be a bit shorter like it is pulled into the body. But this lasts for hour or so-than gets back no normal.
Also-as I am still young(27) I have a lot of sex/masturbation. Last month I had even three weeks were I was masturbating each day(practicing long duration…fighting with quick ejaculation) and have NOT seen any negative effects.
As to testosterone…I do not know why some guys put so much hope into it-I can not see any reason why ‘T’ should help in gaining. Back few years ago I was taking high levels of testosterone in order t build my muscles. The only way ‘T’ is affecting ‘men issues’ is that it increases libido. I could have sex 2-3 times a day, every day. But that is ALL. My dick was not even harder than normal not to hope for any gains…From my experience I can tell that ‘T’ affects only libido-nothing else.