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Case Study:  The role of DHT, prostaglandins E-1/E-2/E-3, and Nitric Oxide in the penile (clitoral) enlargement for more sexual orgasm (Here is the fact: A balance action of prostaglandin E-1 and E-2 on the nerves and blood vessels allow the tissue to expand and stretch without pains. For example: pregnant women stretch and grow the uterus and abdomen without pains under a simultaneous action of prostaglandin E-1 and E-2,  but start labor contraction pains when prostaglandin E-2 overpower prostaglandin E-1, in conjunction with the action of oxytocin, cotisol and epinephrine!)
Reader: 11/06/2005> Thanks please can you explain from previous email the ballooning method? thank you very much best
Dr. Lin: 11/06/2005> all you need just simply stimulates your penis with an O-ring formed by your fingers without applying any pressure to your urethra. Yes, you must use the "Zero" pressure to avoid stimulating the urethral nerves! However, you must have a spontaneous erection without a hand job or oral stimulation to start with. You should be able to massage your pubis and testicles for initiating an erection without touching your penis.
This method emulates the vaginal stimulation on the penis during sex for penile ballooning as described in the CD-ROM book, Chapter 6. This is the exact method of penile ballooning. You may have to apply VIP Cream to your penis first to boost the prostaglandin E-1 synthesis in the penile surface and subsurface tissue and to emulate the effect of vaginal secretion on the penile surface and subsurface tissue.  You can take advantage of the vaginal heat and prostaglandins to practice penile enlargement.  A hot vagina is the best for penile ballooning practices in morning screwing sex ( http://www;actionlove.com/love/screw.htm  ).  The 3-point excitation love position which can constantly stimulate your entire penis and your pubic vagus nerves is the best one - http://www.actionlove.com/method.htm . This love position with your partner's swinging back and forth  over your pubic nerves can also move your testicles up and down or back and forth in stimulating your testicular function. However, using this love position requires a properly erection to start with in order to avoid penile breakage as described in http://www.actionlove.com/extra/break.htm . If you do it yourself without a partner, you have to stimulate your penis with one hand and massage your pubic vagus nerves or testicles with other hand.  Massaging the pubis and testicles is very important in stimulating the testicular function for the oxytocin and testosterone/DHT production to fuel your penile tissues.
Please note that the penile cellular growth is a slow process, highly depending on DHT and prostaglandins. DHT and Prostaglandin E-2 can increase the density of the capillaries and then nerves, but the prostaglandin E-1/E-3 and Nitric Oxide can keep them flexible and elastic for further stretch without stimulating collagen release or inducing pains.  In fact, prostaglandin E-2 has been considered as an initiator or inductor of cellular proliferation for implantation of fertilized eggs, fetal and puberty penile/testicular growth,  plaques, scars, tumors, and cancers.  So, you have to think about 3 times before you mechanically or bio-chemically stimulate the prostaglandin E-2 release in your penis and testicles or other pelvic tissues where you can experience pains as a pre-warning of the inflaming nerves and blood vessels.  Please keep in minds, without prostaglandin E-1 and E-3 modulation on the cellular mRNA,  prostaglandin E-2 can ignite the unlimited/destructive inflammation,  tumor and cancer cellular growth, particularly when excessive DHT or estrogen feeds the cells.
This is why a combination of DHT and prostaglandin E-2 can grow your penis and testicles (and her clitoris and G-spot), or even worse your prostate as well as cancers or tumors too;  And,  a combination of estrogen and prostaglandin E-2 can increase the breast size (yours and hers), trigger women's persist sexual arousal, ignite Endometriosis (uterine cellular inflammation !), Vaginismus (penetration/intercourse pains) (spotty vaginal cellular inflammation),  Vulvodynia (vulva abrasion)/vestibulitis, and Vaginosis ,and grow breast/uterine/cervix/ovarian tumors or cancers,  when there is a lack of prostaglandin E-1 and E-3 release from the local tissues. That is, you will love prostaglandin E-2,  and hate it too! Your relationship with prostaglandin E-2 is Love and Hate.
Please note: A hot vagina is more effective than your hands since it not only supplies prostaglandins to your penis and urethra but also stimulate your penile prostaglandins release and promote your vagus, S2-S4 and L1-L2 nervous action on your pituitary and testicles during sex. As long as you can last longer than 30-60 minutes with a hard erection and hold ejaculation back 3-5 times in a love session, lovemaking will help your grow your penis, and you will find out you can ejaculate more. This is because holding an hard erection over 20 minutes is likely to trigger the more prostaglandins release from the penis, prostate,  testicles and seminal vesicles as long as you can supply enough prostaglandins precursors ( ingredients ) to the local receptors and cells. With a lot of DHT, oxytocin and prostaglandins in the penile tissue,  your penis won't back down even after ejaculating. Please also read the following articles -
On the effect of the vaginal/cervical secretion on penile erection/ballooning and premature ejaculation. Why one tight vagina makes him erect harder and last longer for sexual orgasm , but the other tight one promotes his premature ejaculation?
==> http://www.actionlove.com/cases/case11032.htm,
He experienced sex with his dog's hot vagina/cervix/uterus (3 or 4 degrees higher than his penis) and the tie by the vaginal/cervical/uterine cramping/gripping/sucking against his penis for his sexual orgasm twice.
==> http://www.actionlove.com/cases/case13711.htm , and 
Expanding your penis by intercourse 
==> http://www.actionlove.com/cases/case7506.htm 

In the penile ballooning practice,  you have to stop your ejaculation 3-5 times in a 30-60 minutes session as given in
http://www.actionlove.com/cases/case7648.htm . This is because when you are about to come, your penis is expanded to a maximum with a high level of DHT release from testicles into the bloodstream, and the expanded penile tissues will release prostaglandin E-2 at that moment.  
To last longer, you have to master anal breathing to stop ejaculation and direct the sexual energy flow back your tailbone and spine. You also need a powerful serotonin/parasympathetic nervous modulation on the prostate sympathetic nerves,  and a lot of  prostaglandin E-1 and E-3 release in the penile/prostate/urethral tissues to modulate the negative effect of prostaglandin E-2 on the prostate ejaculation valve if you want to last longer.

Reader: 11/06/2005>
Thank you so very much it makes more sense to me and I am greatful for your help.
Kindest wishes
Dr. Lin: 11/06/2005>
During your puberty, DHT, prostaglandin E-1/E-2/E-3 and Nitric Oxide cause a constant penile erection and expansion without pains. DHT and Prostaglandin E-2 are responsible for the penile cellular proliferation while Prostaglandin E-1/E-3 and Nitric Oxide prevent the collagen release during the erectile expansion, where collagen can harden the penile erectile nerves and blood vessels. Penile ballooning uses this natural penile cellular proliferation force to regrow the penis. Without a modulation of DHT, prostaglandin E-1/E-3 and Nitric Oxide, penile stretching, jelqing or pumping can stimulate excessive prostaglandin E-2 and collagen release for penile/prostate/urethral/bulbourethral pains when prostaglandin E-2 inflames the tissues, nerves and blood vessels, and for erectile dysfunction or penile deformation when collagen starts to harden the tissues, nerves and blood vessels. 
The problem is: you don't know how much force you can use to expand/stretch/ beaten your penis to safely induce an optimal prostaglandin E-2 release without triggering collagen release.
Penile ballooning is safe since it depends on your self penile expansion.
When I practice penile ballooning during sex for 60 minutes, my penis swells like being beaten up, but no pain and just feeling semi-numbness. I understand the prostaglandin E-2 makes the penis look swelling, but I have not inflammation pains since my penile tissues, nerves and blood vessels have enough DHT, prostaglandin E-1/E-3 and Nitric Oxide to heal the swelling without collagen release.
Even after I ejaculates, my penis won't back down for another 10 minutes. I can see the combination effect of DHT, prostaglandin E-1/E-2/E-3 and Nitric Oxide in orchestra with the pituitary hormone oxytocin in the penile erectile tissues.  I have explained this phenomenon in
He said ' i have started taking what you told me and i am getting very very hard morning erections the thing that worryies me is that they dont go down very fast it takes ages.... my girlfriend made me ejaculate last night and even after that it did not go down very quick' for more sexual orgasm; On the differences between the puberty long-term erectile (for penile growth) and Priapism conditions.

Actually, I have a lot of examples in

However, I have found that my foreskin limits my penile growth. This is because I lost about 1 inch or so after my 1993's circumcision. If I force my penis to grow more by penile ballooning, the skin of the glans neck will become too thin and irritated. 

Most of the problems caused by the penile enlargement exercises result from deficiency of DHT, prostaglandin E-1/E-3 when the men ( as described in http://www.actionlove.com/extra/penilex.htm ) have experienced penile shrinkage (due to medication drugs, street drug abuse, alcohol abuse, smoking, aged neuro-endocrine function (low testosterone and DHT), erectile nervous disorders, premature ejaculation, and sexual exhaustion as a result of  over-ejaculation /over-masturbation)  before they practice penile enlargement exercises.  The men with medication drugs use, street drug abuse, alcohol abuse, smoking, aged neuro-endocrine function (low testosterone and DHT), erectile nervous disorders, premature ejaculation, and sexual exhaustion as a result of  over-ejaculation /over-masturbation  must avoid practicing penile enlargement exercises, penile weight lifting or stretching or penile pumping since they don't have any physical conditions to support penile enlargement. They have to restore their puberty conditions first before they can enlarge their penis.

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