Ejaculation: What Is It? How Do You Control It?

Ejaculation Articlenormal ejaculationEjaculation is one of those mysterious processes of the human body. When males are young, it can happen spontaneously. As men enter sexual adulthood, controlling ejaculation becomes a focus. And, as men get older, being able to ejaculate can become an issue.

Read on to learn more about ejaculation. How does ejaculation happen? How does it differ by stage of life? What are the primary issues centering on ejaculation? And much, more!

Written by Kimberly Wylie


  • Ejaculation occurs when semen is ejected from the penis, via the reproductive tract.
  • Ejaculation begins with an erection, caused by some form of sexual stimulation.
  • Ejaculation can differ, depending on the stage of life.
  • Anejaculation is the inability to ejaculate, despite having an erection.


ejaculation speedEjaculation occurs when you eject semen from the male reproductive tract. This semen usually carries sperm, but not always, as in the case of men who’ve had a vasectomy. Ejaculation also is most often accompanied by an orgasm. Ejaculation typically occurs as the last stage of sexual activity, with it having the end goal of conception.

  • Uncontrolled ejaculation may happen because of prostate disease
  • Uncontrolled ejaculation may also happen spontaneously when your asleep – known as ‘wet dreams’ or ‘nocturnal emission’.

Interestingly, ejaculation travels at 28 miles per hour, when leaving the penis. That’s fast!


Penis Anatomy

To first understand the mechanics of ejaculation, you must first understand the anatomy of the penis itself. Be sure to read our article – Penis Anatomy Basics – to get a better understanding of how the penis itself is designed and functions. However, here are two of the important details, when it comes to ejaculation:

  • The penis has two chambers called the corpora cavernosa, which run the length of the shaft, and are filled with a maze of blood vessels. 
  •  The urethra runs along the underside of the corpora cavernosa and is the channel used for both urine and semen.
  • The tunica albuginea is the membrane surrounding the corpora cavernosa, which keep the blood in the penis, to maintain an erection.

It Begins with an Erection

An erection begins with stimulation – this can be either physical or mental stimulation, or a combination of both. During sexual arousal, nerve messages stimulate the penis. These impulses cause the muscles of the corpora cavernosa to relax. When the blood vessels of the corpora cavernosa relax and open up, blood rushes in through the cavernosus arteries to fill them. The blood then gets trapped under high pressure and creates an erection. 

It Ends with Ejaculation

Sexual stimulation, and often friction, causes signals to be sent to the spinal cord and up to the brain, When sexual stimulation reaches a critical level, ejaculation occurs as a reflex action, controlled by the central nervous system. There are two phases to ejaculation.

  • Emission – Emission happens when the body is preparing to release sperm from the body, and is just before expulsion. is when the sperm is prepared for release from the body, just before expulsion. The vas deferens contract to squeeze sperm toward the base of the penis. The sperm is then combined with other substances to form semen, including fluid from the seminal vesicles and prostate.
  • Ejaculation Proper – Ejaculation proper occurs when the semen is actually expelled from the body. Muscles at the base of the penis contract at a rate of once per every 0.8 seconds approximately. This forces the semen through the urethra, out of the penis, in typically five spurts. Once this process has started, it is impossible to stop.

how ejaculation works


As we progress through the varying stages of life, ejaculation also changes.

  • Childhood (Before Puberty) – Boys are not able to ejaculate until the begin puberty. The hormones that stimulate the ejaculation response are not present in young children, as testosterone isn’t produced in children, until they reach puberty.
  • Puberty – During puberty, boys often experience spontaneous nocturnal ejaculation while asleep. Known as “wet dreams.”
  • Early Sexual Adulthood –  When a young man begins to masturbate and/or have a regular sexual partner, nocturnal emissions may decrease. However, at this stage of life, premature ejaculation, especially while with a partner, may be a concern. Learn more about premature ejaculation here – https://www.pegym.com/articles/premature-ejaculation.
  • Late Adulthood – As men grow older, ejaculation problems can arise. This can include the inability to ejaculate, due to erectile dysfunction. Also anejaculation and anorgasm can become a problem, as men age.


Anejaculation is the inability to ejaculate semen, despite being able to get and maintain a normal erection. Anejaculation can be situational or more pervasive. There are two types of anejaculation – primary and secondary.

  • Primary Anejaculation – Primary anejaculation is men who have never been able to ejaculate
  • Secondary Anejaculation – Secondary anejaculation is men who have been able to ejaculate in the past, but for whatever reason find themselves unable to ejaculate, after a normal period of sexual stimulation.

Causes of Anejaculation

Anejaculation may be caused by either physical or psychological factors.

  • Physical Factors – When anejaculation occurs due to a physical dysfunction, this is typically because the prostate gland and seminal ducts can’t release the semen. This can be due to a variety of reasons, including: spinal cord injury, trauma or infection of the pelvis (either due to injury or surgery), certain diseases like: Parkinson’s, diabetes and multiple sclerosis.
  • Psychological Factors – Sometimes anejaculation isn’t caused by a physical  reason, but rather a psychological reason. Stress, anxiety and even relationship issues can result in situational anejaculation. Sometimes anejaculation caused by psychological factors can resolve itself. In other cases, it may need treatment.

How is Anejaculation Treated?

Treatment for anejaculation depends on the cause. If it is due to a psychological factor, and the anejaculation is persistent, speaking to a mental health professional or a relationship counselor may be in order. For physical factors, the underlying physical factor needs to be addressed and treated by a medical practitioner.


Controlling when you ejaculate is an important part of most men’s sexual experience. Here are two great articles to read, whether you suffer from premature ejaculation or simply want to last longer in bed.