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A full bladder presses on the spine and stimulates a nerve that allows the blood flow to the penis to increase. This "Morning wood" is not a sexual response, but a physiological adaptation that was probably embraced by our body to help prevent bed wetting.

Bed wetting is very common among boys prior to puberty, once puberty kicks in & the morning erection starts, bed wetting stops & is almost unheard of in pubescent & adult males.

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Q: How does a full bladder in the morning cause an erection?
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Related questions

Do Men need an erection every morning?

ye you obviously not waking up to a fit enough woman!!!!!!!!


Why does a full bladder cause increased migraine or headache pain?

Why does a full bladder cause headaches


Can older male have morning wood?

Depends what you mean by 'older' ! I'm almost 50, and that happens to me regularly. In most cases, the actual cause is a full bladder - not 'naughty' dreams !


Why are men erected in the morning?

Men are erect in the morning because they need to use the bathroom. Your penIs is telling u that u need to go and if u sit to go first thing in he morning u release all the urine in your baldder so sit firt thing in the morning


How does a full bladder feel for boys?

A full bladder triggers an urgency to urinate. If you don't urinate within a reasonable amount of time, the bladder can overfill and backflow to the kidneys, which can cause serious problems.


What are facts about bladder?

when it is full it is roughly the size of a soft ball. Also the chemicals in tobacco can cause bladder cancer.


What is the cause of urine in 5 to 10 minutes in adult?

Full bladder.


Can a very full bladder put pressure on the uterus and cause miscarriage?

no and yes


How can have a full erection while having enlarged prostate gland?

Prostate enlargement by itself does not effect the ability to get an erection. Prostate enlargement can lead to painful ejaculation, which can impact the ability of a male to achieve a full erection. If sex or masturbation prevents a full erection, due to enlarged prostate, you can use a penis pump to help achieve an erection.


Holding a painfully full bladder for many hours because of being denied permission to go and even being struck there hard enough by jokester friends to cause breathtaking pain is definitely dangerous?

Yes, it is very dangerous to have a full bladder and then be hit in the bladder. A person can actually have their bladder burst in some rare cases.


Can guys pee with a hardon?

Having a hardon (erection) can make it difficult to pee (urinate). How difficult is different from person to person. There is no physical reason why you should not be able to, only a mental one of being able to relax the muscles that control the bladder. The other problem of urinating with a hardon is being able to direct it in the right direction and this depends on the angle of your erection. You might find that you need to sit on the toilet and lean forwards. Men with a erection the points upwards will find the most difficulty in aiming at the toilet. However, is not easy to urinate just before or after you ejaculate. Part of the normal process when you ejaculate involves closure of the bladder neck. The bladder neck closes so that semen does not go backwards into the bladder. The closure of the bladder neck will make it very difficult to urinate for several minutes after you ejaculate, even if you have a full bladder.


Why cant you pee when your bladder is full?

It should be easier to pee when your bladder is full because there is more pressure on your bladder. If you are having trouble peeing, see a doctor.