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Physiology of an Erection

Physiology of an Erection:            Refer to ‘HPTA Illustration’

By John Abdo

The penis seems to have a mind of its own when men are experiencing andropause or hypogonadism. The mind-penis connection (big head/little head) becomes impaired through declining hormone production, insufficient circulation of blood and diminishing penile responsiveness, to name a few.

As youngsters, it was a ‘sure thing’ that a man’s little head would obey commands from his big head. The mere thought of sex, or something sexy, was adequate to excite our little buddy. However, as men age, unfortunately, the connection between the big head and the little head is often hindered delaying the onset of erections while also making erections more challenging to sustain.

But before we play the brain-blame game, let’s take a deeper look at erection physiology to better understand what’s really going on:

Obtaining then sustaining an erection is made possible through a highly complex chain of psycho-biological processes that are under the control of the brain, hormones, nervous and circulatory systems, spinal column, testicles, prostate, and, of course, the penis. As a result of the thought of sex and/or a physical sexual sensation [sensuous touch], the Hypothalamus gland secretes an incredibly potent glandular-stimulating hormone called Gonadotrophin Releasing Hormone [GnRH]. GnRH rushes out of the Hypothalamus and speeds it’s way to the Pituitary gland that’s just a fraction of an inch away.

The Hypothalamus is a ‘sensitive’ organ. By this I mean it reacts to our senses, all six of them. Yes, there are 6, not 5. What we See, Hear, Taste, Smell and Touch are the commonly known (five) senses however the 6th sense that I’m referring to relates to the mind’s ability to create sexual excitation and function by means of fantasy, desire, memory, lust or libido. Whenever any of these six senses incites the Hypothalamus sexual magic typically ensues.

Under normal conditions, the Pituitary gland responds to the GnRH signal by secreting two other fascinating hormones; Luteinizing Hormone [LH] and Follicular Stimulating Hormone [FSH]; collectively known as the Gonadotrophins. Once released from the Pituitary, LH and FSH travel all the way down to the gonads, i.e., the testicles, in particular, the testicles’ Leydig Cells. When the Pituitary gland produces LH and FSH from the GnRH signal, and when the gonads respond to LH and FSH, this is called a “Positive Feedback”.  [Feedback literally means that the gonads and penis are positively reacting to the brains’ Hypothalamus and Pituitary hormonal messengers].

However, if the Pituitary fails to respond to GnRH, or the gonads fail to respond to LH and FSH, then this is called “Negative Feedback”; sometimes referred to as Down Regulation, a condition many steroid users and andropausal men are all too well aware of. Negative Feedback results in a disruption, cessation or disconnection between the internal linkage of the brain, glands, hormones, gonads and penis, and results in varying degrees of andropause, hypogonadism, impotence, or just plain-old ED!

As an FYI, this glandular-hormonal cycle is scientifically referred to as the HPTA or HPGA: Hypothalamic-Pituitary-Testicular Axis or Hypothalamic-Pituitary-Gonadal Axis.

But Wait! There’s More!

Once the gonads are stimulated by the gonadotrophins (LH + FSH) the penis is then prepped for sexual activity, as an essential influx of penile blood flow must be created. Blood enters the penis through the dilation [or widening] of the tiny circulatory vessels of the penis that fill up, expand and harden the penis’ internal (expandable) spongy chambers called the corpus cavernosum. These tissues are analogous to when a sponge has been soaked in water it grows more voluminous, heavier and harder, and when the water is squeezed out it dramatically reduces in size, weight and firmness. Simply put, the more blood that gets pumped inside the corpus cavernosum the harder and bigger the penis swells up.

This swelling-up effect is produced by the circulatory vessels’ bio-mechanically permitting blood to penetrate into the penis; called vasodilation. This vasodilation process is made possible by yet another chemical agent we naturally produce called Nitric Oxide [NO]. But you might of guessed, as we age, and with poor lifestyle habits, the volume and potency of NO, and many other hormones, decline.

NO is imperative for penile vasodilation while it is also instrumental in allowing another key erection-producing chemical to be released into the penile blood supply, it’s called Cyclic Guanosine Monophosphate (cGMP). cGMP is also necessary to obtain erections however it’s role may be even more important for sustaining them. This key bio-chemical assists in trapping the blood once it’s inside the penis’s corpus cavernosum to sustain its firmness and size.

Without NO and cGMP a man cannot achieve an erection nor will he be able to sustain it long enough to win praises from his lover. Unfortunately, cGMP is destroyed by another enzyme the body naturally produces called Phosphodiesterase-V; popularly known as the acronym PDE-5.  PDE-5 binds to and impedes the actions of cGMP. The trick is to block, delay and/or inhibit PDE-5 so the NO/cGMP-cycle can perform their tasks for obtaining then sustaining firm erections.

Made popular by their multi-million dollar TV ad campaigns are the prescription-only erection pills Viagra, Levitra and Cialis. All three of these synthetic drugs are PDE-5 inhibitors, and very potent ones at that. Their actions block the PDE-5 enzyme so the erection-producing chemicals NO and/or cGMP can carry out their roles in vasodilation of the penis.

Truth be told, I have a problem with doctors issuing prescriptions for erection pills without administering a complete examination to their andropausal-complaining male patients. Prescription erection pills only focus on the final stage of the HPTA cycle serving ‘only’ as PDE-5 inhibitors that have (temporary) influence. This approach, obviously, targets the symptoms of ED while it totally ignores the cause/s for why millions of men are experiencing andropause in the first place. The little head is having problems but it’s often what’s inside the big head that’s actually causing all the dysfunctions.

Let Mom Help!

There are plenty of success-proven ‘natural’ ingredients that holistically target male sexual potency and penile functionality. These marvelous nutritional gifts from Mother Nature nourish and vitalize various body organs like the hypothalamus, pituitary, testicles, and prostate, and also serve as natural PDE-5 inhibitors promoting the production and release of NO and cGMP that stimulates penile vasodilation. That said, it’s best to seek natural, safe, success-proven alternatives that nourish both the ‘causes’ and the ‘symptoms’ of your sexual health concerns. Solely relying on prescription erection medications, again, are only temporary, target the symptoms and create an array of sickening side-effects.

Sexuality is an incredibly complicated science. Please regard this article as a brief, incomplete depiction of this sophisticated topic. Use it to better educate you and your doctor. If you’re experiencing any sexual performance challenges, or smart enough to plan to prevent, seek professional medical help from skilled sexual-health practitioners.

Be a wise guy. Using your big head in a prudent manner will certainly benefit how your little one performs!

Wishing You the Absolute Best of Health!

John Abdo

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 John Abdo is an Olympic Strength & Conditioning Coach, Inductee into the National Fitness Hall of Fame, Award-Winning Health & Fitness Expert, and the author of the doctor-endorsed book, Ultimate Sexual Health & Performance™.  John is also the creator of Androzene® the high-potency male-potency formula men are relying upon to boost their sexual health and performances. The information contained in this article should not be construed as medical advice. For more information, please visit

June 8, 2012 Posted by | Performance Library | , , , , , , , , , , , , , , , | Leave a comment

Cellular Integrity and The Role of Antioxidants

Cellular Integrity and The Role of Antioxidants

By John Abdo

Antioxidants are powerful microscopic wonders found in many of the foods we conveniently have available to us. We cannot live long without these gifts from Mother Nature, and if we did survive without them, we would not live well.

Antioxidants provide the trillions of cells that comprise our body and brain with and protection from toxic invaders. They are best known for combating Free Radicals, noxious enemies that attack our cells that result from junk food, pollution, drugs, stress and other unhealthy causes.

ANALOGY: Let’s take a fresh apple and slice it in half. One half we’ll enjoyably eat while the other half we’ll leave on the counter-top, “exposed”. In just a short period of time, the uneaten half of that apple clearly shows signs that a cellular decaying process has begun, as the apple starts to turn brown evident that it’s quickly dying. Uneatable by our standards, we’ll toss the uneaten half of that apple into the trash and cover it up. Amazingly, and shockingly, in a couple of short days we’ll notice a swarm of tiny flies living in and flying around that half apple, along with a multiplying population of slimy little critters [called maggots] crawling all over it. So how did all this happen? It’s the result of a radical invasion.

The same comparison applies to our cells. If they are left exposed, and not given their proper source of protective and vital nourishment, they will undergo a degradation process prompted from an attack by radical invaders. Unless and until antioxidants come to the rescue the dying cells are doomed, so it’s a healthy and wise practice to consume antioxidants as a daily regimen to maintain cellular integrity.

The great news about foods that contain antioxidants is that most of them taste terrific while those that don’t {individual preference} can fortunately be prepared in alternative ways to make them tasty. When you think you’re low in consuming antioxidants, or just want to bump up your consumption as an insurance policy for your own body, here’s a few nutritious and delicious chooses you can add to your meals or consume alone as healthy snacks.


Blueberries: TASTY: Possess amazing abilities to enter brain cells for improvement in memory and mental functions, and are also extremely helpful for the eye health.

Oranges: REFRESHING: An over-whelmingly popular, and potent source of Vitamin C that’s essential for heart and lung health, kidneys, bones and more.


Broccoli: CRUCIFEROUS: Has amazing cancer-fighting properties that protect cellular DNA. Plays a significant role in maintaining healthy hormones especially as person ages.

Carrots: PERFECT SNACK: An incredible root plant that strengthens the immune system, prevents lung cancer, and promotes overall health to the skin, eyes, lungs and intestinal tract


Green Tea: INVIGORATING: A terrific energy booster that fights free radicals and improves nervous system health. Also used successfully in fat loss programs.

Garlic: FLAVOR-FULL: One of the best-known natural antibiotic sources that has powerful antioxidant properties. This herb is terrific for preventing and treating colds and flu, treating acne, and controlling cholesterol levels.


John Abdo is an Olympic Strength & Conditioning Coach, Award-Winning inventor of fitness equipment like The AB-DOer® and Inductee into the National Health & Fitness Hall of Fame. John is also the co-developer of the popular male-performance formula Androzene®. For more information please email John at:

June 8, 2012 Posted by | Performance Library | , , , , , , , , , , , , , , , , , , , | Leave a comment

Hormones and Age

UnknownADAM: Yet another nickname for ED

This acronym represents Androgen Deficiency in Aging Males, as age-related hormonal decline is a fact of life. Levels of all hormones start to drop with age. Longevity specialists who are also skilled in resetting declining hormones claim that after the age of 25, the decline begins. Depending on lifestyle and mindset, this decline continues until the day we pass. However, keeping an eye on our internal hormonal status is critical for maintaining “that youthful glow” as we continue to mature, making it possible to enjoy sex for much longer than normal.

(Excerpt taken from Ultimate Sexual Health & Performance™, Abdo, ©, All Rights Reserved)

July 5, 2009 Posted by | Performance Library | , , , , , , , , , , , , , , , | Leave a comment

What are the Causes for Erectile Dysfunction

imagesMany may believe that Erectile Dysfunction, aka, ED, is a penis condition. And if they’re regarding this disorder as a lack of obtaining, or maintaining, an erection, basically, they’re right. But was “causes” ED to happen in the first place? This is the prudent question to ask, then address.

Surprisingly, medical sciences haven’t known, or seemed to want to know, the answer to this question that’s been asked by men throughout the ages. A majority of doctors along with what seems to be the entire medical community, disappointingly, have historically ignored male sexuality on one basic premise; in lieu of the “grand scheme” of things, man only contributes, on average, 2-3 minutes of effort in the pro-creative (or making babies) process. What this means is that, time-wise, a male ejaculates quickly planting the baby-making sperm into a female. However, once the sperm has been planted, and the female has been inseminated, the woman’s role in the pro-creative process requires over 9 months of carrying a quickly-enlarging baby inside her body, and succumbing to a plethora of social, personal and occupational sacrifices, in addition to the pains and discomfort of labor, and the time is takes her to recover during the post-partum period.

Medical sexual sciences now know better. They are advancing quickly these days, and mostly because men are whining and complaining about their faltering bedroom performances. We now know that there are many “causes” for ED including those that originate from emotional, neurological, circulatory, endocrinolgical, and (poor) lifestyle reasons.

If you’re relying on a prescription erection pill to perk up your “little Willy”, chances are you’ll get a (temporary) erection but you’re doing nothing to address the “cause(s)” of your condition, and by sheer statistical data, you’ll be making your problem worse.

Be prudent and address both the “causes” and “symptoms” of any of your health challenges, especially those that relate to your hormones, glands, testicles, penis’, prostates!

In the book, Ultimate Sexual Health & Performance™, author, John Abdo, explains all of the causes for ED, and other sexual disorders, while explaining, in detail, how ED is “only” a symptom and should be treated, and cured, according to that premise.

July 4, 2009 Posted by | Performance Library | , , , , , , , , , , , , , , , | Leave a comment

Why Sex is Healthy

ssssssStats & Facts: (Excerpts taken from “Mind Over Matter”; Ultimate Sexual Health & Performance™, Abdo, ©, All Rights Reserved)

Your sex life has a great impact on your physical health. Everything is active during sex – your brain, nervous system, muscles, heart, circulation, thermogenics (body heat), lungs and respiration, hormone production, perspiration, and more…

Sex requires a degree of physical effort, often burning as many calories as you would burn running 15 minutes on a treadmill. That would come out to about 200 calories. Who needs a health club membership?

People who have frequent sex and orgasms are less violent and less hostile than those who don’t.

A study found that frequent ejaculation between the ages of 20 and 50 helps to dramatically decrease the risk of prostate cancer in men.

There are hundreds, maybe thousands, more accounts that prove how healthy sex is. If you’re not getting enough lately do what it takes within legal, moral and ethical means to get your fair share of Mother Natures’ gift to mankind; sex!

July 4, 2009 Posted by | Performance Library | , , , , , , , , , , , , , , , , | Leave a comment

Female Sexual Disorder (FSD)

ooooWomen who are experiencing any one of the many female sexual disorders often regard them as normal. Dr. Tommey, OBGyn and Sex-Health expert, believes that the priming a woman receives growing up (and through our modern culture) makes her accept (or tolerate) depleting levels of health and sexuality that she once enjoyed during her younger years. Women are brainwashed into believing that as they age, they concurrently (inevitably) become less of a female (on a sensuous level). They start believing that their loss of sexual arousal, vaginal de-sensitivity, discomfort, and their inability for reproduction are normal and natural parts of the aging process that they must learn to accept. Okay, reproduction ceases with advanced age, but sexual pleasure can last well into a woman’s Golden Years!

(Excerpt taken from “Mind Over Matter”; Ultimate Sexual Health & Performance™, Abdo, ©, All Rights Reserved)

July 4, 2009 Posted by | Performance Library | , , , , , , , , , , , , , , , , , | 1 Comment

Sex on the Brain

Sex AddictYou’ve probably heard that most men “think with their little heads”, and if that means men are always motivated by sex, then that saying is accurate. Sex is man’s procreative genetic programming mechanism that dates back to our origin, and has fuel man ever since. Without sex man would not be here, nor could I be writing this. Remove its religious and cultural misunderstandings, and man must create, otherwise the human race would become extent.  The brain is wired in such a way that it is intimately linked to the reproductive organs, and that includes the testicles, prostate and penis.  This might sound like a treatise for pro-creation, and basically it is, but man’s sexual procreative expression is rewarded by Mother Nature as indicated by the extreme pleasure we receive (men and women) during the entire sexual experience, especially climaxes (aka, orgasm).  Many specially skilled sex-health scientists believe that the pleasure we obtain from sex has, and will continue to motivate man to have sex, make more babies, and keep advancing the human race. A survival code for all species, sex, along with eating and shelter, is what makes a man fulfill his natural obligations and maintain his true identity.  Obviously, it’s working as we’ll be approaching 10 billion people living on this planet in the next half century, or sooner. So when the “big head” thinks about sex, the “little head” is genetically programmed to respond, and is also rewarded with a lot of pleasure.

July 4, 2009 Posted by | Performance Library | , , , , , , , , , , , , , , , , , | Leave a comment

Performance Anxiety – Fear of Failure

PEIf there ever was “sure thing” for killing an erection, you can point all your fingers at the emotional, psychological and mental condition known as Performance Anxiety; AKA, Fear of Failure.

When a man enters into a state of anxiety or fear, his brain quickly responds, protecting that man by searching for ways to ensure safety, security and defense, and – of course – victory over threat. Thoughts of fear cripple a man’s ability to achieve an erection because fearful situations ignite a fight or flight response, preparing him to either put up his fists and duke it out, or run as fast as he can to escape a dangerous confrontation. Fearful or fighting situations have never been overcome with a hard penis. Instead, the brain is preparing the body to actually put up a physical fight as adrenaline pours into the bloodstream, making the heart race to pump blood to the fighting tissues; the lungs huff and puff to provide the organs with a higher demand of oxygen; and the major muscles tense (the penis is not one of them) so they can contract as strongly and as explosively as possible to defend themselves in dire situations.

Book(Excerpt taken from “Mind Over Matter”; Ultimate Sexual Health & Performance™, Abdo, ©, All Rights Reserved)

July 4, 2009 Posted by | Performance Library | , , , , , , , , , , , , , , , , , | Leave a comment

Sexual Desire – Libido

Sexual desire, lust, libido, or as Sigmund Freud referred to it as, id, is the psychological mechanism inside a person’s brain that triggers the desire and need for sexual expression. When a person’s brain is healthy, so is their sexual desire. Millions of men, and millions of women, experience loss of sexual desire, also known as sexual arousal disorder, or SAD, which can be traced to imbalances in brain chemistry, particularly from the pituitary and hypothalamus glands. Many people may, in fact, be okay “physically” in regards to their sexual capacities however it’s their mental health that destroys complete and satisfying sexual experiences. When seeking ways to solve sexual disorders it’s wise to look at all the possible “causes” so all the symptoms can cease and normal, healthy sexuality can ensue.

July 3, 2009 Posted by | Performance Library | , , , , , , , , , , , , , , , , , | Leave a comment

Bigger Testicles

TesticlesMany men are concerned about the size of their penis’, and they also show a high degree of concern about their testicular dimensions.  In fact, the bigger the balls, the bigger the man — it’s been that way since man first arrived here on planet earth. If you’ve been diagnosed to be hypogondal, or simply have an unhealthy lifestyle, or have entered into that stage (age) of life which produces less hormones than your younger years, or you’re using anabolic steroids, you know all too well that your balls shrink during these conditions.  There are several techniques known to boost testicular size. The easiest is to abstain from masturbation, as many guys simply jack-off too frequently, and this will diminish sperm count and, consequently, can reduce testicular size — your balls become drained.  Another technique is to actually shove your nuts into a penis vacuum device (not joking) and pump them up while you’re pumping up your penis (please learn proper methods for penis and testicular suction before attempting). A injectable drug named human chorionic gonadotrophin, or HCG, which must be prescribed by a doctor, triggers the release of leutinizing hormone from the pituitary gland that ultimately influences the leydig cells inside the testicles.  The leydig cells manufacture testosterone, and when they are hyper-activated, it’s commonly experienced that testicular cells swell. There’s also over-the-counter pills and potions you can use, like velvet antler  and others, and they all will have similar benefits, but to varying degrees. Please know, however, that individual results will vary and that medical supervision is always suggested especially when you’re trying to tinker with your family jewels.


July 3, 2009 Posted by | Performance Library | , , , , , , , , , , , , , , , | Leave a comment