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Morning Erections: Why do Men Get Them?

Psychiatrist, sexologist, psychotherapist
  • Published:
    25 July 2022
  • Updated:
    14 November 2024
Morning Erections

How many men do not know that erection is an indicator of a male's sexual health? Especially a morning erection (colloquially "morning wood", "morning glory", and "dawn boner"). However, things are not that simple.

Is Morning Erection Normal?

A morning erection is the same mechanism as one that occurs during the day. It is a natural manifestation of male physiology, not a deviation.

Why do Men Experience Morning Erections?

There is still insufficient research into the importance of morning erections, and none of the theories about morning erections are fully supported by studies, but the most important causes can be mentioned.

  • The concentration of testosterone in the blood is maximal in the morning, and decreases in the evening. However, the level of testosterone varies not only throughout the day but also as the individual ages. At the age of 18, it will be higher compared to 40, due to adolescent sexual activity. Testosterone levels naturally start to decrease after the age of 40, up to about 2% annually. Therefore, morning erections occur less frequently as you get older, which is normal. However, it is not normal to have no erection at all.
  • In the morning, the body checks all systems, including the sexual system, to make sure they are functioning properly.
  • Wake up in the REM sleep phase. This is a light sleep phase, marked by eyeball twitching, involuntary muscle contractions, and increasing activity of certain parts of the brain, including areas responsible for sexual arousal.
  • An unproven but widespread theory is sleeping without underwear on your stomach. Combine this with heightened sensitivity of the glans of the penis, and the morning erection is ready.
  • Overfilling of the bladder from a night's sleep can also cause a morning erection.

Until What Age Should Men Have Morning Erections?

Morning erection normally occurs in adolescence, when puberty starts and follows a man until he is about 50. A morning erection occurs more frequently among younger men and less frequently among the elderly. It is normal for an erection to occur every day or a couple of times a week. Concerns should only be raised when a man notices a prolonged absence of morning erections.

So, if you don't know how to start your morning, begin with love.

Sources

Everything You Need to Know About Morning Wood (https://www.healthline.com/health/mens-health/morning-wood#causes), February 16, 2023. Accessed 19 Sep. 2024.

Sleep-related erections: neural mechanisms and clinical significance (https://pubmed.ncbi.nlm.nih.gov/14984691/), Curr Neurol Neurosci Rep. 2004 Mar;4(2):170-8. doi: 10.1007/s11910-004-0033-5. Accessed 19 Sep. 2024.

Sleep-related erectile activity (https://pubmed.ncbi.nlm.nih.gov/8923492/), Neurol Clin. 1996 Nov;14(4):721-37. doi: 10.1016/s0733-8619(05)70282-6. Accessed 19 Sep. 2024.

A critical analysis of the role of testosterone in erectile function: from pathophysiology to treatment-a systematic review (https://pubmed.ncbi.nlm.nih.gov/24050791/), Eur Urol. 2014 Jan;65(1):99-112. doi: 10.1016/j.eururo.2013.08.048. Accessed 19 Sep. 2024.

[Circadian rhythm of testosterone level in plasma. I. Physiologic 24-hour oscillations of the testosterone level in plasma]( https://pubmed.ncbi.nlm.nih.gov/496034/), Andrologia. 1979 Jul-Aug;11(4):287-92. Accessed 19 Sep. 2024.

Testosterone and Aging: Clinical Research Directions (https://www.ncbi.nlm.nih.gov/books/NBK216164/), Biol Reprod. 2021 Jun; 104(6): 1187–1188. Accessed 19 Sep. 2024.


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