Posts Tagged ‘pubococcygeus’

The Female Love Muscles

January 7, 2017

Andrew Siegel MD 1/7/16

Optimal muscle functioning is integral to sexual activity. There would be no “jump” in the term “jump one’s bones” without fit muscles that permit the coordinated movements and muscle contractions that are necessary to engage in sexual coupling.

The following is a short poem I have composed about the muscles of love:

 Limber hip rotators,

A powerful cardio-core,

But forget not

The oft neglected pelvic floor.

Sex is a physical activity involving numerous muscles that coordinate with seamless efficiency. Sexual activity demands movement, a synchronized kinetic chain integrating core muscles and external hip rotators in which both pelvic thrusting and outward rotation of the hips work effectively together to forge a choreographed motion. It is a given that cardiac (aerobic) conditioning is a prerequisite for any endurance athletic endeavor, including SEX-ercise.

Three muscle groups are vital for optimal sexual function—core muscles, which maintain stability and provide a solid platform to enable pelvic thrusting; external hip rotators, which rotate the thighs outward and are the motor behind pelvic thrusting; and the floor of the core muscles—pelvic floor muscles (PFM), which provide pelvic tone and support, permit tightening and relaxing of the vagina, support clitoral erection, and contract rhythmically at the time of climax. When these three groups of muscles are in tiptop shape, sexual function is optimized.

The core muscles are a cylinder of torso muscles that surround the innermost layer of the abdomen. They function as an internal corset and shock absorber. In Pilates they are aptly referred to as the “powerhouse,” providing stability, alignment and balance, but also allowing the extremity muscles a springboard from which to push off and work effectively. It is impossible to use your limbs without engaging a solid core and, likewise, it is not possible to use your genitals effectively during sex without engaging the core muscles.

Who Knew? According to the book “The Coregasm Workout,” 10% of women are capable of achieving sexual climax while doing core exercises. It most often occurs when challenging core exercises are pursued immediately after cardio exercises, resulting in core muscle fatigue. 

Rotation of your hips is a vital element of sexual movement. The external rotators are a group of muscles responsible for lateral (side) rotation of your femur (thigh) bone in the hip joint. My medical school anatomy professor referred to this group of muscles as the “muscles of copulation.” Included in this group are the powerful gluteal muscles of your buttocks.

Who Knew? Not only do your gluteal muscles give your bottom a nice shape, but they also are vital for pelvic thrusting power.

The PFM make up the floor of the core. The deep layer is the levator ani (“lift anus”), consisting of the pubococcygeus, puborectalis, and iliococcygeus muscles. These muscles stretch from pubic bone to tailbone, encircling the base of the vagina, the urethra and the rectum. The superficial layer is the bulbocavernosus, ischiocavernosus, transverse perineal muscles and the anal sphincter muscle.

The following two illustrations are by Ashley Halsey from The Kegel Fix:

2.deep PFM 3. superficial and deep PFM

The PFM are critical to sexual function. The other core muscles and hip rotators are important with respect to the movements required for sexual intercourse, but the PFM are unique as they directly involve the genitals. During arousal they help increase pelvic blood flow, contributing to vaginal lubrication, genital engorgement and the transformation of the clitoris from flaccid to softly swollen to rigidly engorged. The PFM enable tightening the vagina at will and function to compress the deep roots of the clitoris, elevating blood pressure within the clitoris to maintain clitoral erection. An orgasm would not be an orgasm without the contribution of PFM contractions.

Who Knew? Pilates—emphasizing core strength, stability and flexibility—is a great source of PFM strength and endurance training. By increasing range of motion, loosening tight hips and spines and improving one’s ability to rock and gyrate the hips, Pilates is an ideal exercise for improving sexual function.

PFM Training to Enhance Sexual Function: The Ultimate Sex-ercise

The PFM are intimately involved with all aspects of sexuality from arousal to climax. They are highly responsive to sexual stimulation and react by contracting and increasing blood flow to the entire pelvic region, enhancing arousal. Upon clitoral stimulation, the PFM reflexively contract. When the PFM are voluntarily engaged, pelvic blood flow and sexual response are further intensified. During climax, the PFM contract involuntarily in a rhythmic fashion and provide the muscle power behind the physical aspect of an orgasm. The bottom line is that the pleasurable sensation that one perceives during sex is directly related to PFM function and weakened PFM are clearly associated with sexual and orgasmic dysfunction.

PFM training improves PFM awareness, strength, endurance, tone and flexibility and can enhance sexual function in women with desire, arousal, orgasm and pain issues, as well as in women without sexual issues. PFM training helps sculpt a fit and firm vagina, which can positively influence sexual arousal and help one achieve an orgasm. PFM training results in increased muscle mass and more powerful PFM contractions and better PFM stamina, heightening the capacity for enhancing orgasm intensity and experiencing more orgasms as well as increasing “his” pleasure. PFM training is an excellent means of counteracting the adverse sexual effects of obstetrical trauma. Furthermore, PFM training can help prevent sexual problems that may emerge in the future.  Tapping into and harnessing the energy of the PFM is capable of improving one’s sexual experience. If the core muscles are the “powerhouse” of the body, the PFM are the “powerhouse” of the vagina.

Bottom Line: Strong PFM = Strong climax. The PFM are more responsive when better toned and PFM training can revitalize the PFM and instill the capacity to activate the PFM with less effort. PFM training can lead to increased sexual desire, sensation, and sexual pleasure, intensify and produce more orgasms and help one become multi-orgasmic. Women capable of achieving “seismic” orgasms most often have very strong, toned, supple and flexible PFM. Having fit PFM in conjunction with the other core muscles and the external hip rotators translates to increased self-confidence.

Wishing you the best of health,

2014-04-23 20:16:29

A new blog is posted every week. To receive the blogs in the in box of your email go to the following link and click on “email subscription”:

Dr. Andrew Siegel is a practicing physician and urological surgeon board-certified in urology as well as in female pelvic medicine and reconstructive surgery. Much of the content of this entry was excerpted from his recently published book The Kegel Fix: Recharging Female Pelvic, Sexual and Urinary Health:

He is also the author of MALE PELVIC FITNESS: Optimizing Sexual & Urinary Health




What You Don’t Know About Your Pelvic Floor Muscles, But Should

June 18, 2016

Andrew Siegel, M.D. 6/18/16

* Please note that although this entry is written for women, it is equally applicable to men.

In dogs, the pelvic floor muscles (PFM) play an important role with respect to tail position and movement. They are responsible for tail wagging in circumstances when dogs are happy and for the tail being held down between the legs when dogs are frightened or anxious. Weak PFM are virtually unheard of in the canine population, suggesting that with constant tail movement, the PFM are exercised sufficiently to maintain tone and vitality.


foot in water bowl

Photo above is Charley, my English Springer Spaniel.  Note her happy, erect tail and her curious habit of eating with her foot in her water bowl.

For better or worse, humans do not have tails to wag or place between our legs.  Tails became extinct with the evolutionary process (with the exception of the character played by Jason Alexander in the movie “Shallow Hal”). If we did have tails, our PFM would likely get a great deal more exercise than they typically do.

Sadly, the PFM don’t get the respect that the glitzy, for-show, mirror-appealing, external glamour muscles do. However, the PFM are hidden gems that work diligently behind the scenes–muscles of major function and not so much form-offering numerous powers and benefits, particularly so when intensified by training. Although not muscles of glamour, they are muscles of “amour,” and have a profoundly important role in sexual, urinary, and bowel function as well as in supporting our pelvic organs.

What are the PFM?

The PFM—commonly known as the “Kegel muscles”—are a muscular hammock that form the bottom of the pelvis. They are also referred to as the “saddle” muscles because you sit on them when seated on a bicycle. They are part of the “core” group of muscles.

What are the “core” muscles?

The core muscles are the “barrel” of muscles comprising the torso, consisting of the abdominal muscles in front, the lumbar muscles in back, the diaphragm muscle on top and the PFM on the bottom. The core muscles are responsible for stabilizing the pelvis and holding the spine erect.

1.core muscles

                              Illustration of core muscles by Ashley Halsey from                                            The Kegel Fix: Recharging Female Pelvic, Sexual and Urinary Health

Where are the PFM?

The deep PFM (pubococcygeus, iliococcygeus, coccygeus) span from the pubic bone in front to the tailbone in the back, and from pelvic sidewall to pelvic sidewall, between the “sit” bones.

2.deep PFM              Illustration of deep PFM muscles by Ashley Halsey

The superficial PFM (ischiocavernosus, bulbocavernosus, transverse perineal, anal sphincter) are situated under the surface of the external genitals and anus.

3. superficial and deep PFM

            Illustration of superficial and deep PFM muscles by Ashley Halsey


What is the function of the PFM?                                                                      

The PFM muscles intertwine with the muscles of the vagina, bladder and rectum,  provide support for the pelvic organs, play a vital role in sexual function and contribute to the control mechanism of the urinary and intestinal tracts.

What is PFM dysfunction?

PFM “dysfunction” is a common condition referring to when the PFM are not functioning properly. PFM dysfunction ranges from “low tone” to “high tone.” Low tone occurs when the PFM lack in strength and endurance and is often associated with stress urinary incontinence (urinary leakage with coughing, sneezing, laughing, exercising and other physical activities), pelvic organ prolapse (when one or more of the pelvic organs fall into the space of the vagina and at times outside the vagina) and altered sexual function (decreased sensation, difficulty accommodating a penis because of looseness, difficulty achieving climax, etc.). High tone occurs when the PFM are too tense and unable to relax, giving rise to a pain syndrome known as pelvic floor tension myalgia (this situation is entirely analogous to the high-strung dog with its tail between its legs).

Trivia: PFM dysfunction often causes symptoms in several domains, e.g., women with urinary control issues often have trouble achieving orgasm, both problems contributed to by weak PFM.

What causes PFM dysfunction?

The PFM can become weakened, flabby and poorly functional with pregnancy, labor, childbirth, menopause, weight gain, a sedentary lifestyle, poor posture, sports injuries, pelvic trauma, chronic straining, pelvic surgery, diabetes, tobacco use, steroid use, and disuse atrophy (not exercising the PFM). Sexual inactivity can lead to their loss of tone, texture and function. With aging there is a decline in the bulk and contractility of the PFM, often resulting in PFM dysfunction.

Why are the PFM so vital to your health?

The PFM are perhaps the most versatile yet under-appreciated muscle group in your body. They provide vaginal tone, support to the pelvic organs, a healthy sexual response–enhancing arousal and orgasm–and urinary and bowel sphincter control. They play a key role in your ability to carry and deliver a baby as well as contributing to the mobility and stability of your torso.

A simplified way of thinking of the female pelvic organs–bladder, uterus and bowel–is as “storage containers” for urine, fetuses, and stool, respectively. Each organ is connected to the outside world by tubular structures, the urethra, vagina and anal canal, respectively, through which flow the contents of the organs. The PFM play a strong role in compressing the tubes for storage and relaxing them for emptying.

What Is the muscle function of the PFM?

Whereas most skeletal muscles function as movers (joint movement and locomotion), the PFM are unique in that they function as stabilizers—helping to keep the pelvic organs in proper position—and compressors—helping to tighten the vagina, urethra and rectum—important to urinary and bowel control as well as to sexual function. During sex the PFM activate, causing a surge of genital blood flow that helps lubrication and clitoral engorgement; at the time of orgasm, the PFM contract rhythmically.

Why bother exercising your PFM?                                                        

The PFM are out of sight and out of mind; however, they have vital functions, so are muscles that you should be exercising. PFM training is based upon solid exercise science and can help maintain PFM integrity and optimal function into old age. The PFM are capable of making adaptive changes when targeted exercise is applied to them. Pelvic training involves gaining facility with both the contracting and the relaxing phases of PFM function. Their structure and function can be enhanced, resulting in broader, thicker and firmer PFM with a stronger resting tone and the ability to generate a powerful contraction at will. PFM training can be effective in stabilizing, relieving, improving and even preventing issues with pelvic support, sexual function, and urinary and bowel control. In addition to the muscle-training benefit of PFM training, it also supports tissue healing by stimulating the flow of oxygenated, nutritionally-rich blood to the vagina and other pelvic organs.

Because of pregnancy, labor and delivery, the PFM get stretched more than any other muscle group in the body. Through pelvic training, the PFM have the capacity of rebounding from this obstetrical “trauma,” recovering tone and function. Prenatal pelvic training can help fortify the PFM in preparation for pregnancy, labor and delivery.

Bottom Line: The PFM may literally be at the bottom of the barrel of our core muscles, but in terms of their important functions, they are figuratively furthermost from the “bottom of the barrel.” Without functioning PFM, your organs would dangle out of your pelvis, you would be wearing adult diapers and your sexual function would be non-existent. It behooves you to keep these vital muscles in tip-top shape. 

Please check out the following 3 minute video entitled “Why Kegel?”:

Wishing you the best of health,

2014-04-23 20:16:29

A new blog is posted every week. To receive the blogs in the in box of your email go to the following link and click on “email subscription”:

Author of THE KEGEL FIX: Recharging Female Pelvic, Sexual and Urinary Health– and MALE PELVIC FITNESS: Optimizing Sexual & Urinary Health available on Amazon Kindle, Apple iBooks, B&N Nook and Kobo; paperback edition available at

Author page on Amazon:

Apple iBook:

The Kegel Fix trailer:  

Co-creator of Private Gym and PelvicRx: comprehensive, interactive, FDA-registered follow-along male pelvic floor muscle training programs. Built upon the foundational work of Dr. Kegel, these programs empower men to increase pelvic floor muscle strength, tone, power, and endurance: or Amazon.  In the works is the female PelvicRx pelvic floor muscle training DVD. 

Pelvic Rx can be obtained at, an online store home to quality urology products for men and women. Use promo code “UROLOGY10” at checkout for 10% discount. 

10 Ways To Know That You Are Doing Your Man Kegel Exercises Properly

July 19, 2014

Andrew Siegel, MD   Blog # 163


There has been a great deal of hubbub on the topic of pelvic floor exercises for men this past week, with the publication of a review article in the Gold Journal of Urology reviewing the benefits of pelvic floor muscle training in males:

and with Tuesday’s New York Times article entitled Pelvic Exercises For Men, Too.

and with the launch this week of the first comprehensive, interactive, follow-along exercise program that helps men strengthen the muscles that support sexual and urinary health

The story was carried in the NY Daily News

as well as the San Francisco Chronicle, the Atlanta Journal Constitution, the Tampa Bay Times and many other media outlets, including Live With Kelly and Michael and Doctor Radio.

There has been some misinformation regarding the proper technique of pelvic floor muscle exercises, and I would like to set the record straight. On one of the radio shows I listened to, it was stated that kegel exercises are akin to “pushing down, grunting and doing the Valsalva maneuver (medical term for pushing and straining).”  The truth of the matter is that kegel exercises involve pulling in and up without grunting, just the opposite of straining. One strains to move their bowels, whereas when one kegels they accomplish the opposite—tightening up the sphincters to NOT move their bowels; in fact, doing kegels is a means of suppressing bowel as well as urinary urgency.

In the 1940’s, gynecologist Dr. Arnold Kegel popularized pelvic floor muscle exercises for females—particularly for women who had recently given birth—in order to improve urinary and sexual health. But Kegel exercises are NOT just for the ladies. Men have the same pelvic floor muscles as do women and they are equally vital for sexual and urinary health. The pelvic floor muscles form the floor of the all-important “core” group of muscles and contribute strongly to men’s ability to have control of their bladders and colons and are play a crucial role in erections and ejaculation. The pelvic floor muscles are what allow the blood pressure in the penis at the time of erection to be sky high—way above systolic blood pressure—allowing for bone-like rigidity. These muscles are also the “motor” of ejaculation.

Doing Kegel exercises properly is fundamental to reaping the benefits derived from getting your pelvic floor muscles in tip-top shape. So how do you know if you are contracting the pelvic floor muscles properly?

  1. You know you are doing your Man Kegels properly when you see the base of your penis retract inwards towards the pubic bone as you contract your pelvic floor muscles.
  1. You know you are doing your Man Kegels properly when you see the testicles rise up towards the groin as you contract your pelvic floor muscles.
  1. You know you are doing your Man Kegels properly when you place your index and middle fingers in the midline between the scrotum and anus and contract your pelvic floor muscles and you feel the contractions of the bulbocavernosus muscle near the scrotum and the pubococcygeus muscle towards the anus.
  1. You know you are doing your Man Kegels properly when you can pucker your anus (not the gluteal muscles) as you contract your pelvic floor muscles. As you do so, you feel the anus tighten and pull up and in.
  1. You know you are doing your Man Kegels properly when you get the same feeling as you do when you are ejaculating as you contract your pelvic floor muscles.
  1. You know you are doing your Man Kegels properly when you touch your erect penis and feel the erectile cylinders surge with blood as you contract your pelvic floor muscles.
  1. You know you are doing your Man Kegels properly when you can make the penis lift up as you contract your pelvic floor muscles when you are in the standing position.
  1. You know you are doing your Man Kegels properly if you can stop your urinary stream completely when you contract your pelvic floor muscles.
  2. You know you are doing your Man Kegels properly if you can push out the last few drops of urine that remain after completing urination when you contract your pelvic floor muscles
  3. You know you are doing your Man Kegels properly ifafter doing a pelvic floor muscle training regimen you start noticing improvements in erectile rigidity and durability as well as better quality ejaculations, ejaculatory control and improvement in urinary control.

Andrew Siegel, M.D.

A new blog is posted every week. To receive the blogs in the in box of your email go to the following link and click on “email subscription”:

Author of: Male Pelvic Fitness: Optimizing Sexual and Urinary Health; available in e-book (Kindle, iBooks, Nook, Kobo); paperback now available:

Private Gym website where pelvic floor instructional DVD and resistance training equipment are now available:




Man Kegel Exercises

February 22, 2014

Blog # 142

As a urologist, I have expertise in both male and female pelvic health as opposed to gynecologists who treat only women. When I reflected on the similarities and differences of the male and female pelvis, genitalia and pelvic floor, I came to some important conclusions. It occurred to me that in terms of development, the male and female genitalia are incredibly similar with respect to their embryological origin. Additionally, the pelvic floor muscles (PFM) are virtually identical in both genders. Exercises of these pelvic floor muscles for purposes of improving sexuality, urinary control and pelvic support are widely known and acknowledged in the female population; in fact, women are instructed to do these “Kegel” exercises during and after pregnancy. So, why not for men?

Hmmmm…identical origin of genital tissues, the same exact muscles, documented effectiveness of these exercises for women’s pelvic health…what’s the missing link? The missing link is that if they are so beneficial for females, why have they virtually been ignored when it comes to the male population? Hey: What’s good for the goose is good for the gander. More specifically, what is good for the female goose is equally good for the male goose. PFM exercises are gender-neutral, having the same meaningful potential in males that they have proven to have in females but for some reason, have been largely neglected and remain an unexploited and powerful resource.

In the 1940s, Dr. Kegel—a gynecologist from Los Angeles—popularized pelvic floor muscle (PFM) exercises in females in order to help improve sexual and urinary health after childbirth. I think it is fair to state that most adult women have heard of and many have practiced these exercises, known as “Kegels.”  In brief, when a woman does a Kegel contraction, she voluntarily contracts the muscles that surround the urethra, vagina, and rectum. As a result, the urethra gets pinched, the vagina tightens up, and the rectum gets squeezed.

Kegel pelvic floor muscle exercises are by no means a new concept, Hippocrates and Galen having described it in Ancient Greece and Rome respectively, where they were performed in the baths and gymnasiums. Strengthening these muscles was thought to promote general and sexual health, spirituality, and longevity

Men have the very same pelvic floor muscles that women do and an equivalent capacity for exercising them, with a parallel benefit and advantage to urinary and sexual health. Nonetheless, the male PFM have yet to receive the recognition that the female PFM have, although from a functional standpoint are of vital importance, certainly as critical to male genital-urinary health as they are to female genital-urinary health. When a man contracts his pelvic floor muscles, he voluntarily tightens the muscles that surround the urethra and rectum, which enables him to stop his urinary stream and tighten his anus. Under the circumstances of having an erection, when the PFM are engaged, the penis will lift skywards towards the heavens. Unfortunately, however, most men are unfamiliar with pelvic floor muscle exercises and it is the rare man who has performed them. Even many physicians are unaware of the pelvic floor muscles and their potential benefits for men.

In terms of anatomy, the male and female external genitalia at the earliest stages of embryological development are identical. That is, one and the same, duplicate, a carbon copy of each other. No “his” and “hers,” only “hers” and “hers.” Add testosterone (the male sex hormone), to the recipe and presto, the primitive male genitals transform into a penis and scrotum. In the presence of testosterone the genital tubercle (a midline swelling) becomes the penile shaft and head; the urogenital folds (two vertically-oriented folds of tissue below the genital tubercle) fuse and become the urethra and part of the penile shaft; and the labio-scrotal swellings (two vertically-oriented bulges outside the urogenital folds) fuse and become the scrotum. In the female embryo, the absence of testosterone causes the genital tubercle to become the clitoris, the urogenital folds to become the inner lips (labia minora), and the labio-scrotal swellings to become the outer lips (labia majora).

Essentially then, the penis and the clitoris are the same structure, as are the scrotum and outer labia.  How fascinating it is that female external genitalia are the “default” model.  In other words, female external genitalia form in the absence of testosterone, and not in the active presence of female hormones.

Similarly, the PFM are virtually identical in both genders, as can be clearly seen in the images that follow (credit to Dr. Henry Gray, Gray’s Anatomy of the Human Body, 20th edition, originally published in 1918; public domain).  Compare the bulbocavernosus muscle in the male with that of the female and the ischiocavernosus muscle in the male and the female. The only real difference is that the BC muscle in the female is split around the vagina.


In summary, we have identical origin of genital tissues, same exact muscles, and well-documented effectiveness of these exercises for women’s pelvic health. So why do we never hear about PFM exercises for male pelvic health? If the genital and PFM anatomy is virtually “the same” in both genders, as is the supportive, sphincter and sexual functions of the PFM, then why should PFM exercises be any less beneficial for males than females? The bottom line is that pelvic floor muscle exercises in the male have the same meaningful potential that they have proven to have in females, but for some reason, have been ignored, neglected and remain an untapped yet valuable resource.

My objective is to bring to the forefront an awareness of the male pelvic floor muscles and an understanding of the numerous benefits of tapping into their capacity for optimizing and improving sexual and urinary function. My ultimate goal is to help male pelvic fitness achieve the same traction and status as female pelvic fitness has, as did Dr. Arnold Kegel for females. To be continued…

Andrew Siegel, M.D.

Much of this material was excerpted from Male Pelvic Fitness: Optimizing Sexual and Urinary Health; in press and available in e-book and paperback formats in March 2014.

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