Hi all, I am 20 years old male and I’m in a very good health condition. At least I have been. I am a very active person generally, I do like to exercise and I practice sports nearly every day, I’m like 5 times per week in the gym about an hour and a half or so. Usually in the summer I am playing tennis as well as other sports too. however, this does not seem to be enough to be in a perfect condition because I am now having an issue in maintaining my erections and it is dooming me for about an year or so now. I have firstly had sex when I have been 14 years old with a girl that I have been in a pretty long relationship. 4 years. so I have had sex until I have been 18 years old and we broke up. so, it means that I have not had sex for nearly 2 years now – I’ve been only masturbating. In the past, I mean when I have been 14 – 18 years old I have never had a problem with my erection. well, in these 2 years that I have not had sex I have been masturbating very much. it was happening mostly daily. Rarely I wasn’t masturbating a day but sometimes I could do it for 2 or even 3 times per day. having that said and making a quick calculations, in the past 2 years I’ve been masturbating more than 7 times a week or something like that. the problem is that now I have met a really really good looking girlfriend. She is super sexy with an awesome body that I like a lot. well, in the foreplay I am having a 100% erection, however, when I am penetrating her I feel how I am starting to lose my erection and in about a minute or 2 I am nearly completely flaccid. I did realized that this might be caused because I have been watching porn a lot and that I have been masturbating so much that is why, for about 2 weeks now I have dramatically reduced my masturbation and I have quit to watch porn. I have tried to totally stop masturbating but that’s hard that is why I am masturbating now only once in a week or something like that and I haven’t watched porn for these 2 weeks. Now, I really have no idea why is this happening to me and how I can return back to normal. Could it be that my penis is used to my hand or something in this matter? I really don’t know but I need help. I can achieve pretty easily a goo erection, however if I am stopping to touch my penis then it is going flaccid very fast and this ruins everything (as you can understand, I can’t penetrate my girlfriend while touching my penis. By the way, I also need to say that in the last 2 years I have been doing PE which is penis enlargement exercises like for example squeezes, stretching and jelq. Do you think that this might be the problem? and yeah, for the last 2 weeks I have also stopped to do PE either. Generally I’ve stopped to do pretty much everything that I have been doing in the last 2 years. I still continue to exercise but I doubt a lot that this is the issue because often people are being told to start exercising for achieving erections, not vice versa. I’m sorry if this seems to be a gross post but I don’t know what else I need to do. I would be very happy if I would get some quick results especially if it would be from a doc. I wish you all the best people!