How to ripple the vaginal muscles up and down like a milking hand?

An old Indian Tantric manual stated about woman:

'She must always lay stress on closing and constricting the Yoni(the vagina) until it holds the Lingam(the penis) as with a finger, opening and shutting at her pleasure, and finally acting as the hand of the Gopala-girl who milks the cow. This can be learned only by long practice, and especially by throwing the will into the part affected. Her husband will then value her above all women, nor would he exchange her for the most beautiful queen in the Three Worlds...'

Is it possible to ripple the vaginal muscles up and down(like a milking hand)?
Is it possible for women to control more than one muscle inside the vagina?

* Yes, but it's very hard.
"Repeat all exercises two-three times a week until you have full control of the
wooden egg and can move it up to the cervix and down to the opening of the
vagina."
'Make better love' by Enid Broderick

* "B. The three sections of the vaginal canal
C. Summary of egg exercises step-by-step
1. Insert the egg
2. Horse stance alignment
3. Contract the first section
4. Contract the second section
5. Squeeze the third section
6. Use the second section to move the egg left and right
7. Use the first section to move the egg left and right
8. Use both sections to move the egg left and right
9. Use both sections to tilt the egg
10. Combine all movements
E. Employ all muscles of the vaginal canal"
Exerpts from the index of 'Cultivating Female Sexual Energy' by Mantak Chia & Maneewan Chia.

"If you want to go further and learn to move the individual muscles of the vagina then the 'exercises with an egg' are very much worthwhile, to be found in the book: 'Taoist Secrets of Love II, Cultivating Female Sexual Energy' by Mantak and Maneewan Chia - recommended."

"One of the tightest women I ever knew, had three children. She
got that way by working heavily *after* having the children; trying
to 'get back into shape'. Only she 'got back' into better shape than
she started."
Anonymous man

'Women, Take it from me! If you have had kids or not, I would highly
recommend that you get your vaginal muscles in shape then discover
how to use them. The look on the men's faces when you apply these
methods, is to die for! The results last long after the sex is over... if
you know what I mean. I have never had such a good time being bad!'
Marion - Atlanta

"My sisters and I used to test the strength of our vaginas by inserting a full
douche (disposable) and then trying to hold it in while we bent over or sat
on the toilet. (When I say inserting a full douche, I do not mean the water.
I mean that we would insert the nozzles and then try to hold the container
that was filled with water from pulling the nozzle down and out). We would
fill the bottles with different amounts of water and work our muscles until
we could hold a full one. This took me about 4 months. (I was 20 at the
time and my older sisters were 21 and 23.)"
Anonymous woman

"With well-exercised vaginal muscles, the stimulation of both the clitoris and the G-spot will increase during intercourse. When the muscles of the pelvic floor contracts - during orgasm or by a conscious contraction - the labia will move(be pulled) too. The little hood that is created over clitoris where the labia meets, will glide back and forth over it. Direct stimulation of the clitoris, without touching it! The same phenomenon will happen, but to a lesser extent, when the penis is moved back and forth in the vagina. But the more exercised the vaginal muscles are, the greater this 'involuntary' stimulation of the clitoris and the G-spot
will be. Furthermore, strong muscles contains more of the capillaries that helps fill the clitoris with blood. It's when the clitoris swell and rise that it becomes more sensitive and can recieve and send signals of pleasure through your body, with concentration to your lower abdomen."

From a women magazine

Be proud of your vagina, especially if it's strong!