Why do I wake up like this?

Everyday I wake I have a erection like I had a dream about sex but I didn't soo can you tell me why?

Every male has this happen to them about 3-5 times a night. You must just wake up at the right time.

Its normally cause you have to p*ss... so try going to the bathroom before you goto bed... other then that it can also just be your hormones at work... and sometimes its cause you rolled over on your stomach which will cause you to have this happen also...

actually males always wake up with an erection. while you're sleeping you get an erection about every half hour. when you wake up you will almost always have one.

that is not true... there is many times when I dont have one