why do guys need a erection?what does it do?
913181
If your asking a question like that.. First clue is; YOUR NOT OLD ENOUGH TO KNOW..  Ask your parents dear...
585039
This is very normal! Most healthy men wake up in the morning with an erection. Men have several erections a night as part of their sleep cycle. Many times they wake up and find they are still erect.\n\nA man's penis becomes erect in response to sexual arousal and excitement, but it can also become erect as a result of deep relaxation, such as what's experienced in deep sleep — with or without dreams. An erection is caused by a rush of blood to the penis. A man's penis, especially a young man's penis, can also become erect without any kind of arousing stimulation - this is called a "spontaneous erection."\n\nHope this information helps!
241650
Good question.  Generally this is because your bladder gets full and an erection is the way your body helps hold it in.\n\nOf course it's a pain when you get up and try and figure out a way to urinate with that erection ...
925092
U get an erection when its cold? Dont think u can have 1...unless more blood flows to the penis when its cold? My winky has never been cold!
304746
Well the erection comes with the filling of your penis with blood and... it dones not has to deal with your vitamins.
53435
Either have a lot of sex, or mastur bate a lot. Maybe a cold shower might work. But if you have a stiff erection, there's a reason, satisfy it!
955864
Semi-technically speaking the penis fills with blood and becomes larger and harder by that blood being held in the penis. A penis will go flaccid and shrink once the blood is released.\n\nSo, it isn't quite nerves that cause the erection although the human body is full of sensitive nerve endings under th eskin that when massaged or caressed can offer wonderful feelings that might result in the penis becoming erect. And it doesn't have to be the nerves in the genital region receiving the attention either. Often by doign a back massage on a guy or even legs, he will display a nice hard penis.\n\nAlthough if you are always pestering or nagging a guy, you will be said to get on his nerves but that will not have the desired effect of making his penis erect. If anything it will shrink it even further - hehe.
102424
more foreplay, the longer you have an erection without sex, the more your buddy gets used to the feeling of being stiff.  During sex, don't just thrust til you spew, get a good rythm going, then ease it off, pay attention to her needs, then go back to thrusting, etc
1032128
blood rushes to that area because of arousal. Just like a guy when he's turned on he has an erection.
722885
Obviously he is very aroused and it does take a little bit sometimes if he is really aroused for his penis to calm down and soften. I have seen it before. If the erection remains for a very long period of time like I think over a few hours it becomes a problem, if not no probs.
1170796
I would suggest a website such as Wikipedia for more information, as there are many causes and "cures" for it.\n\nIn brief, impotence is either physical or psychological. The way a penis becomes erect is a rush of blood to the organ, which then causes the penis to become rigid to aid during intercourse. Impotence is the condition when this blood does not stay in the penis for long enough, or the inability for any blood to get to the penis in the first place.\n\nPhysical\nIf the impotence is caused by a physical problem, then the cause can be disease or infection, a blockage of the veins, or some other restriction. The cure would be to provide medication or surgery to help the symptoms reverse.\n\nPsychological\nSometimes the problem is caused through the brain. Maybe the man does not feel up to it, is tired, or feels insecure. These and other similar reasons can impact on his ability to "perform". The way to cure this is to help the man through his emotional problems and allow him to feel safe and secure again.
60419
i got you....erections...and erection are from blood....so having good blood circlation means longer stronger erections(bigger size)....all blood comes for the heart so...strengthing your heart will pay off in the bedroom...via running, exercising, not smoking, not being overweight, and eating right
122739
Men have penises for a few reasons.  Firstly, so they can pee.  Secondly, so they can deliver sperm to an egg to reproduce children.  And finally, so they can give and experience sexual pleasure.
1144057
Is he stressed out about something?  Stress can do strange things to people and not being able to maintain an erection is one of them.  Try talking to him to figure out what is really going on.  His inability to maintain an erection is probably stressing him out even more.  Just let him know that you are there for him.
1022428
An erection does not hurt.  It feels good and is extra sensitive to touch and stimulation.  It is a normal part of male sexuality.  In the early years 11  - 13 a boy may get an erection several times during the day sometimes at very embarrassing moments.  He can't control these and he has not been thinking sexy things.  They just come because of the way his body is growing.  From 14 to 16 a boy has more control over his erections and he gets them during sexual contact with a partner or if he stimulates himself by masturbation.  A boy cannot insert his penis into a girl until his penis is erect.  So he has to get aroused first and then have sex with a girl.
1029739
Yes, it is a form of ED. Some men can't get an erection at all and some men can't maintain one. A friend of mine told me once that her husband used a ring at the base of his penis that helped him maintain his erections. I don't know the nice term for it, but the rude one is a *ock ring
457715
Several things can cause morning erections. One, as the bladder fills during the night, it tends to trigger a spinal reflex that can cause erection. Also, the congestion caused by the full bladder can decrease the outflow of blood from the penis. There are aspects of normal sleep cycling that tend to induce erection as well.