Copyright Notice:  Copyright (C) Newman K. Lin, Ph.D., PE., The Lin Institute, All rights reserved. If you want to use the information of this document, Please contact Dr. Lin by e-mail:

Case Study - How to separate the tailbone muscle from the PC muscle for prolonging sex and sexual orgasm - the trick of Dr. Lin's Sexual ChiKong Breathing
Reader: 2/1/2001>
Dr Lin, from reading a lot of the other readers cases, i notice you emphasise exercising a muscle between the tail bone and anus, instead of the pc muscle which would cause premature ejaculation when contracted during sex. Can you please show exactly how to find this muscle. e.g. like with the pc muscle which can be found by stopping and starting during urinating.

Dr. Lin: 2/1/2001> 
You won't find or isolate the anal/tailbone muscle unless you exert a pressure against your bladder when you contract it.
This muscle is called Anococcygeal body. 
More reading is given in 

Why contracting the PC muscle promotes ejaculation/orgasm for men (and orgasm for women)?
When you exercise, you burn testosterone into DHT (DiHydroTestosterone) to grow your muscles. Similarly, exercising your prostate (PC) muscle will burn testosterone into DHT locally. DHT, the super hormone, will heat up the tissues instantaneously.  A long-term DHT stimulation will help the muscle to grow bigger.  This is what the body-builders do for.  But, this method won't work for penile enlargement because the penis does not have the muscular tissues.  On the other hand, excessive DHT  in/around your prostate will over-stimulate the prostate for the temporary prostate enlargement and premature ejaculation, although it can stimulate the penis to erect for a very short period of time.   A long-term  PC exercise will help the prostate to trap more DHT for prostate growth and establish a somatic reflection for orgasm and ejaculation. To prolong sexual intercourse,  don't train your prostate nerves for an automatic response to sexual stimulation. Load your thrusting forces or body tension on your knees, legs, shoulders and hands and contract your tailbone muscles.  Let testosterone burn into DHT in the tailbone muscles to build the somatic reflexion there and to heat up the tailbone for the ultimate recycling of sexual energy back into your spinal cord and brain.   Grow your tailbone muscles with DHT! why not? The tailbone nerves will automatically respond to sexual stimulation - the trick of Sexual ChiKong Intercourse!