During REM sleep when body systems are tested, parasympathetic nerves trigger tissues in the penis to get engorged with blood and then firm. The last REM period occurs right upon awakening, when men most often wake up with an erection. A lack of morning erection could be an indicator of Erectile Dysfunction but there could be other physiological & psychological factors.
Curejoy Expert Dipti Mothay Explains:
Morning erection may be a very common experience for almost every man. While others choose to ignore the reason behind the morning erection, most assume that morning erection is caused due to the delay in passing urine.
Research suggest that during the REM (Rapid Eye Movement) sleep, the body’s systems are tested, including the function of the erectile tissue within the penis. While this sleep occurs, the parasympathetic nerves trigger the tissues in the penis to become engorged with blood, and then firm. Therefore, the last REM period often occurs right upon awakening, when men will most often wake up with an erection.
Yes, a lack of morning wood may also be a sign of erectile dysfunction (ED) or impotence. However, there are various causes of erectile dysfunction. Generally, erectile dysfunction can be related to physiological or psychological status of a man. However, a lack of morning wood may help to differentiate between these two causes.
Physiological Causes of Erectile Dysfunction:
Physiological causes of impotence relate to an underlying inability to fill the penis with blood to make it erect. This often has a vascular cause, meaning that it relates to dysfunction of the blood vessels. It may also occur as a side effect to medications, most commonly antidepressants. Men with a physiological cause of impotence will not have morning erection.
Psychological Causes of Erectile Dysfunction:
Alternatively, some men are not able to have an erection due to psychological difficulty. A lack of sexual arousal or responsiveness may lead to impotence. This can also occur because of anxiety. Men with this condition will have morning erections, since they are physically capable of having them. Therefore, men who suffer from periods of impotence who still have morning erection likely have a psychological cause for their erectile dysfunction.
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