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where you can find the ultimate solutions for Tao of Love and Rejuvenation.

Based upon "Resonant Excitation Of Sexual Orgasms - Tao Of Love Coupling"
by Newman K. Lin, Ph.D., PE, a bridge between the Eastern Taoism Sexuality and the Western Engineering Science.==> [ORDERING THE BOOK]< =>[Why?]
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Warning: This is NOT an XXX Website, But we deal with Multiple, Sexual Orgasms and Impotence!
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Case Study -  Why young men experience Premature ejaculation in the vaginal sex, but not in oral sex or hand jobs? weak erection for no sexual orgasm!
Reader: 7/10/2002> 
Me and My girlfriend started having sex and have had sex 5 times. Everytime we have sex, within the first few minutes I ejaculate and then I go limp. When I am getting oral sex it takes about a half hour for me to orgasim. How can I Prolong an orgasim so it takes about the same time as oral sex or longer. How can I also mantain an erection after having an orgasim.

Dr. Lin: 7/10/2002>This can explain your problem, young man!

You have a weak or no erection in the beginning of sex and rely or hand job and oral sex to bring your penis up.
During the oral or hand jobs, you don't have to contract your prostate for assisting erection. That is why you can last longer.
When you have penetrate sex, you have to contract your PC /prostate muscle to help your erection.
Once you do that, you stimulate the Cowper's (Bulbourethral) glands to flood precum into your urethra. Precum contains prostaglandin E-1 that help erection, but its other content Prostaglandin E-2 stimulates your prostate to open the ejaculation valve for seminal emission.
If you want to last longer, you may have a spontaneous hard erection which creates the high blood pressure inside the penile chamber to the nervous transmission along the urethra.
You are only 18, you should be able to re-erect your penis right after ejaculation. When I was in my 20-30, my penis won't go limp after I ejaculated the 2nd or 3rd times.
It seems that Over-masturbation during your puberty has eaten up your acetylcholine/parasympathetic nervous recharging systems responsible for recharging your penis right after ejaculation.
You are too young to take my products; So you should reduce your ejaculation frequency (by lovemaking or masturbation) down to no more than once every other day. Don't ejaculate if you can not have a spontaneous erection or your ejaculation is forceless or watery. 
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