"Spontaneous" penis growth - how??

Since the beginning of December, I noticed that my penis, which honestly was small compared to reported averages, began to feel strange. For about a week, I couldn't help but climax after only 5 minutes of stimulation, when normally I can last for about 10-20 (Hey, I'm not experienced!). But afterward, my endurance suddenly increased to 30 minutes to an hour - with the same amount of nerve stimulation - and upon measuring, I discovered that my penis grew a half-inch both in length and girth, which obviously surprised and kinda excited me, especially considering that I'm already 21.

How does something like this happen? Can changes in diet or lifestyle, or even medications - all of which I have tried very hard to improve over the past couple of months - cause this? Whether the reason be good or bad, I need to know.

[schmig]

It is actually very possible to have spontaneous penis growth. Diet, excercise and more importantly your psychological mood will all affect your penis size. Remember, blood flow is most important.