"its a man thing "

Why do men get an erection upon waking up?

erections are actually night time (nocturnal) erections which happen while you're asleep. Men begin having them in early childhood and they continue throughout adult life. They appear during REM (Rapid Eye Movement) sleep -- the stage of sleep where dreaming occurs.

However, these involuntary erections have nothing to do with dreams or sexual excitement. They occur when neurological stimulators cause blood to flow into the penis. This ensures that oxygen is properly delivered to the penis and helps keep penile tissue healthy.

Men don't normally notice these erections, but may occasionally encounter them upon waking. About 4 or 5 of these hard episodes happen every night, and yes -- all men have them. Men who are unable to have an erection because of a psychological problem still have erections during the night.

Many men say that "morning" or nocturnal erections are noticeably harder than those during the day. This is normal, and a natural result of nocturnal erections.

The frequency of night time erections vary with age and only medical conditions such as sleep disorders or severe depression will keep some men from having them. In these cases, a urologist should be consulted.

#A 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 that experienced in deep sleep called REM (rapid eye movement) -- a period of sleep during which you dream.

#An erection is caused by a rush of blood to the penis. A man's penis -- especially that of a young man -- can also become erect without any kind of arousing stimulation; this is known as "spontaneous erection."

#The male testosterone level is at its highest in the early morning during restful sleep, usually built up during the night and at its highest around 4-6 a.m.

#Many times it has to do with what you are dreaming about -- males can be aroused in their sleep and have a nocturnal emission (wet dream).

#No, you do not get an erection because you need to pee. The erection and the need to pee are coincidental. Think about it, do you get a hard-on every time you need to pee?

#Morning erections are technically nighttime erections which happen during Rapid Eye Movement (REM) sleep (when most dreaming occurs), although men older than sixty years may have them during even non-REM sleep. Generally, males experience four intervals of REM sleep per night. These spontaneous erections in the wee hours are caused by specific neuroreflexes that are stimulated during REM sleep. Morning erections are the tail end of a series of nighttime erections, as many as five per night that can last for 20-30 minutes each.

#Many people are not aware of the fact that erections do not just serve sexual purposes; they also are a source of increased blood supply to the penis, so the male body will have several erections at night, just to keep the penis healthy.

#Waking usually occurs after a session of Rapid Eye Movement (REM) sleep. Just about everyone gets an erection during REM sleep, while you're dreaming. That's why you often wake up from a dream, with a hard on. Also, there is the phenomenon of the "Pee Horn", where you wake up desperate for a pee, with a hard on, and then hit yourself in the eye when you go to the bathroom. Everyone gets it.