Why does this happen?

in some mornings when i wake up, i'm surprised with a morning glory erection. why does this happen??????????????

Why does this happen?
Just start worrying if it doesn't happen . This is normal for a healthy young bloke and it normally subsides fairly quickly once you rise out of bed
Reply:I've wrote about that a lot of times!

During the sleep in male body the level of testosterone flowing in the blood increases. That's because during the night or in the dawn we all have unexpected erections!
Reply:cuz u gotta go p
Reply:Always happens to me, it's normal, nothing to be worried about.
Reply:pee or a good dream....hee hee. lol
Reply:You're a freak man this has never happened to me before.
Reply:Toilet purpose only, when you are half done it will flag.
Reply:don't question it just enjoy it
Reply:its because of what u have been dreaming about or if u go to bed with a beautiful woman next to u. xx