There are many reasons for PE, almost as many reasons as there are "solutions".
First of all, as an adolescent, the masturbation habits you developed may have led to this problem. Typically adolescents masturbate with the intention of reaching orgasm quickly, thus premature ejaculation has been “programmed” into your system.
Secondly, the body sees sex as a way to reproduce. Humans are one of the very few species on the planet that has sex for pleasure, not just for reproduction. Therefore, we're not designed to last for hours in bed...because physically, it is simply not required.
And the reason PE happens in guys mainly under 40 years old is because they tend to be healthier and produce more hormones. And that means they have a more efficient reproductive system.
Put simply, ejaculating quickly means your reproductive system is working as nature intended. So relax, there's nothing wrong with you in that sense...but you simply need a way to safely and naturally control it.
You see, once arousal reaches a certain tipping point it becomes almost impossible to hold back ejaculation. But when you can tweak a few mental and physical factors you can push your tipping point farther and farther so you last longer and longer.
The "trick" is to be able to train your body to build a tolerance to even the most titillating sex sessions and increase your staying power. So now you know what's causing PE, you should also know what to avoid when trying to cure it...
