What Are All the Different Styles of Chi Kung?

I'm working on a web page that will be a clear and thorough explanation of Qigong.  It will include links to articles which explore various details in greater depth.  The following is a short section I have been working on:

Below is a list of all the styles of qigong.  Nearly all qigong practices are named after a cosmological principle (like hunyuan, which means original chaos) or a metaphor which is specific to Chinese culture like Wild-goose, (which means lots of weird movements stuck together in one form).  I haven't included every single name because the same type of qigong sometimes goes by different names, this is a list of qigong by characteristics and type.

I first started studying qigong in 1977 when I was 10 years old because it was considered a basic requirement of Northern Shaolin training.  I first heard the term qigong when I was about 20 in the late 1980's as qigong fever was sweaping Mainland China.  By 1995 I had seen every type of qigong on this list.  Every year I hear someone claim to have discovered a new, yet ancient, type of qigong that is more special that all the rest.  Inevitably what they are practicing is just one the following repackaged.  While I find the claims a little pretentious, the trend itself is positive.  All forms of qigong become very personal over time because all dedicated practitioners will naturally combine and integrate the following types of qigong to suit their needs, values and in accordance with their temperament.  I myself have created two "new" types of qigong; Tiger Skin Qigong and Chicken Toe Qigong.  Here is the list:

Zhangzuan (Standing Meditation, done in various postures)

Wu Xing-Five Organs (While the movements themselves may differ from school to school, the basic idea that each organ generates, and is tonified or depleted by, a particular quality of movement is the same.)

3 Dantians (the use of swinging movement generated from, and integrated with, the three centers of the body, abdomen, chest and head) (Note: Swinging the arms from the lower dantian while shifting weight from foot to foot is the most widespread form of qigong.  Variations are used in almost all martial arts schools.)

Cloud Hands (a simple asymmetrical movement of the arms which can be use as a base for integrating other types of qigong)

Muscle Tendon Lengthening (The art of stretching)

Golden Ball (Moving qi around the dantian)

8 Extraordinary Meridians (Exploring how qi moves around the surface of the body at the moment of birth)

Heaven & Earth (Micro/macro cosmic orbit, three dimensional pulsing & elasticity, usually symmetrical movement)

Spine training (Bend the Bow and Shoot the Arrow; drawing qi into the spine for healing, power, and for connecting the movement of the limbs to the spine )

Chan Su Jing, (Silk Spinning --joint releasing & spiraling movements) go

Immortals Dancing in the Clouds (Bone Marrow Washing, Sinew integration, and development of spherical movement)

Daoyin (Orthodox Daoist Lineage Hermit Practice which uses extensive stretching, with rolling slapping jumping, pounding, scraping and self massage.  Sometimes broken into pieces, sometimes combined with circus training or monkey kungfu.)

Hunyuan (Prenatal movement rediscovered with an emphasis on the movement of fluids and the development of the qualities of empty and full.  Often asymmetrical.)

8 Silken Brocade (8 Sinew lengthening and integrating movements)

Wild Goose (A particular teacher's 'list of favorates' put together into a form linking them together.)  (Geese in the wild do lots of different types of movement.  They run, hop, swim, fly, flap, squawk, root, gargle, preen, stretch, stand on one leg, etc...)

Tai Chi--(Taijiquan, the martial art, can be practiced purely to get the benefits of improved balance, mobility, flexibility, and circulation.  In this case it is often simplified and/or made symmetrical. )

Conditioning Techniques  (Iron shirt, Gold Bell, iron palm--toughening exercise for forearms,shins, and torso)

Taoist (Daoist meditation is sometimes taught as stillness qigong.  Particularly jindan, the golden elixir, and various tension dissolving techniques).  (Sometimes the deity visualization intermediary practices are taught without explicit naming of the deities-- only their attributes as visualized.)

Now that I've released the comprehensive list I encourage people to challenge it!  Have you seen or practiced a type of qigong not on the list?  Can you describe it's attributes?

Note: Obviously I've discarded the standard Communist Government organization.  I've never seen Buddhist, Confucian, or Neo-Confucian qigong.

Update: We had a discussion on Facebook, where my blog now appears (search for Scott P Phillips if you want to be my friend).  I decided that the last category "Taoist" is an identity, and therefore not suitable as a category because it opens up the possibility of naming techniques after identity groups of regions.  Therefore, I am changing the "Taoist" Category to "Inner Alchemy."

Four Lies and a Truth

The meme works as follows. You post five things about yourself. Four are untrue. One is true. All are so outlandish, implausible or ridiculous that no one would be inclined to believe that any of them are true. And despite the pleas from your readers, you never divulge which is true and which are fabrications. You then tag five other people (four seriously and one person you are pretty sure would never participate).

1.  Once while driving on the freeway, they guy next to me grabbed my nuts and squeezed them so hard I couldn't control the pedals.  Despite my pleas, he wouldn't let go.  So I knocked him out cold using a back-fist without taking my eyes off the road.

2.  I once kicked a 300 pound man through a wall.

3.  In my one day on the job as a bouncer I subdued an armed robber using only two-finger techniques.

4.  During a public sword demonstration I accidentally slipped, falling off the stage--however I landed, balanced, on the back of an audience member's chair.

5.  While competing in the Gay Olympics in the 1990's, I won the Gold Medal in Wrestling and then on the podium gave a speech in which I refused to accept the medal on the grounds that the Gay Olympics was discriminating against Transgender competitors.

6.  While on a tour of the maximum security section of Folsom Prison, in the yard I was attacked by a gang of 4 Nazis.  I ripped out two of their throats with my bare hands before the guards had a chance to shoot them.

I tag Jianghu, Old Tai Chi Guy, Tai Chi in the Park, Real Tai Chi, and Bookworm.

Hey Google! Make Pinyin and Wade-Giles the Same

I've been trying to figure out how to increase my Google page ranking. I believe I have more explanatory articles on Internal Martial Arts then any other site. (Some people may dispute my authority on the subject or the quality of my writing, but the content is there.) I've written a lot on Chinese Martial Arts, certainly Chinese Martial Arts History, and I know I'm the top site for the connection between Daoism and Martial Arts.

Yahoo and MSN put me near the top but nobody uses them. The newest search engines like Bing and Spezify aren't any better than Google.

So I watched a video recently on my Wordpress Dashboard RSS. It was a guy from Google talking about how to increase your page rank using Wordpress, which I use. Please, if you have a blog or a website that relates to this blog, link to me, I will return the favor. I think a lack of high use links is a big factor in my low page ranking but there is a bigger one and it's Google's fault, not ours.
Still it's my problem.

When I first started writing this blog I played around with different spellings and transliteration of words. But I quickly made the decision to use Pinyin almost exclusively. Why? Because nearly all scholarly works use it. Mainland Chinese use it. And because the Library of Congress uses it. I just figured the search engines would eventually figure out what Librarians figured out how to do with a CARD CATALOG centuries ago. Also, Pinyin is more common among people who have had at least an introductory course in Chinese language.

Here are the Pinyin transliterations for the terms I regularly use on my blog:
Jing, Qi, Gongfu, Baguazhang, Taijiquan, Daoism, Xingyiquan, Qigong, Tuishou, Jindan, Zuowang, Daodejing, Zhuangzi, Laozi, Yijing, Zhengyi, Liuhe, Beijing

Here are the Wade-Giles transliterations:
Ching, Chi, Kung Fu, Pa Kua Ch'ang, T'ai Chi Ch'uan, Taoism, H'sing-i, Chi Kung, Twai Shou, Chin Tan, T'so Wang, Tao Te Ching, Chuang Tsu`, Lao Tsu`, I-Ching, Cheng-i, Luo He?, Pei King

I guess the Pinyin just looks better to me.
Those two word lists mean exactly the same thing and should turn up exactly the same search results. But they don't.

So many other people have hated the Wade-Giles system that they have just made up some word poop:
Lao-tse, Ba Qua Chang, Tai Chi, Chi Gung.

I honestly don't give a lizards tit about transliteration, "Tai Chi" is fine with me.  But it is annoying to have to use different transliterations systems for each word in a single essay, it is even more annoying to have to do what that stupid Google video suggested:
I love Tai Chi. I practice this internal art form everyday. Taijiquan is a good way to stay healthy. When you are old and talk like a frog, you can still practice T'ai Chi, because Tai Qi is so good for you. Tai Chi Chuan is also a martial art that is good for self-defense. T'ai Chi Ch'uan contains many secret powerful fighting techniques!

Or I can do this:
I love Taijiquan (also called T'ai Chi Ch'uan, Tai Chi, T'ai Qi, Tai Chi Chuan, Taichi-quan).

Alternately I can go back over all 530 posts of my blog and add tons of keywords and tags.

And just to add to the silliness, my Wordpress editor is still telling me Daoism is not a word!

If I was a programmer maybe I could write the code to fix this myself.

Full Disclosure: I own a hunk of Google stock, I would be really happy if they took their head out of their arse (ass, azz, but, butt, buttocks, booty, bootie, bum, backside, bottom, behind).

UPDATE:  I have now added an explanation of the problem to my sidebar.  Google, if you are reading this, please consider having me teach Tai Chi at your home office.  Thanks.

Not Your Grandmother's Tai Chi

(Someone out there is probably thinking, "you never met my grandmother."  My apologies to those of you who are the offspring of an unrestrained warrior woman.  Here is an alternate title for you: Pure Fighting.)

Kids have less of a filter, they often say what adults are thinking but are too reserved to say directly.  In a way, the practice of Taijiquan is about trying to be less reserved.  I know that sounds funny; aren't softness and weakness near synonyms for being reserved? But the goal of practicing Taijiquan is to reveal your true nature, if you are by nature reserved, than fine, but I think most people have what Freud called the id, a wild unrestrained, unrefined, spontaneous nature waiting underneath their ego.

But it's wrong to say that we are "trying" to be less reserved, it's more like we are letting go of the need to control, temporarily dropping our social guard, in order to rediscover how our body works.

One of the most popular questions kids ask, particularly about slow circular Taijiquan, is, " Can you use it in a fight?"  I have 100's of posts on this blog talking about Taijiquan as a healing art, a performing art, a pantomime art, a dueling art, a wrestling art, a throwing art, a religious ritual art, a spiritual development art, a game, a form of social engagement, a tool for developing police type threat control skills, a self-defense tool, a way to deepen intimacy with oneself and others, a way of managing stress associated with overwhelming guilt, embarrassment, or fear, a mental relaxation tool, a movement meditation tool, and best of all, a way of revealing our true nature--the way things actually are.

But I would be remiss if I did not occasionally address the Pure Fighting aspects of Taijiquan.  (I believe you can practice in all these ways simultaneously, especially if you set aside a lot of time for it, but it's just as beautiful to choose just one of these ways of practice.  If you don't care about Pure Fighting, that's great!  It is not important.  Really if you want to do something to reduce your chances of ending up in the hospital, wearing reflective clothing while crossing the street is a much better use of your efforts than studying martial arts!  Please skip the rest of this post and plug one of the phrases from the last paragraph into the search box!)

Pure fighting requires discarding restraint.  As an act of necessity it requires being truly wild yet totally committed.  Pure fighting presumes (and this is a huge and difficult presumption to make) that all the moral or psychological restraint one may possess has been discarded.  (Can you tell I'm a big fan of horror movies?)

For Taijiquan to "work" as a pure fighting training system it must be "practiced without pretense" (the first precept of religious Daoism).  I say this because it is very easy to fall into bad habits when practicing with a partner.  Push-hands (tuishou) is the most common two person exercise people use to practice taijiquan.  There is a school of Push-hands which has popularized the expression, "Invest in Loss."  This is absurd, ironic, and also wrong.  They mean that if you practice loosing for a while, you will eventually figure out what your partner is doing and start winning.  This is a fools errand.

To train for pure fighting you must completely discard the notion of winning.  In pure fighting you must be capable of vanquishing multiple threats who are bigger stronger and have longer arms.  In fact, you have to assume that every attack is a potential sacrifice move, meaning the threat is risking everything in order to either, strike you in a vital area, knock you into something hard, get you on the hard ground, or make you vulnerable to one of the other attackers.  Sacrifice moves work, but martial artists don't usually train them because the risk is too high; however, dangerous people can and do use them.

All this while remaining light-hearted, good-natured, and lovable.  All this without becoming possessed by aggression.

The possibility of our art becoming a fantasy is ever present.  For instance, one cliche I hear batted around is that in order to learn fighting you must practice with a non-cooperative partner.  That is a sure way to create pretense.  In order to train for pure fighting your partners must be supremely cooperative.  They must expose all your errors to the light of day.

So now that I've gotten all that out of the way, we can talk about push-hands.  Obviously push-hands can be practiced for one or all of the reasons I listed above in the third paragraph of this post, but I'm talking about push-hands as training for pure fighting.  Of course, I'm only scratching the surface of this subject.

There are an enormous number of push-hands conventions, or rule sets.  Each one trains different things.  If you fail to acknowledge this you will train yourself for a fantasy.  For instance, there is a convention that if your partner moves their foot at all, they have lost.  In the convention, moving your foot is a stand in for being knocked to the ground.  In order to not make this convention a fantasy, you have to sometimes practice it all the way to the ground.  In a pure fighting situation moving your foot doesn't matter very much, as long as you can see where you are moving your foot.  And for this reason, in a Pure Fighting situation, moving forwards is often better than moving backwards.  (With multiple opponents, moving backwards exposes you to being tripped by an opponent on the ground.)

However if you step forward or lean forward without first finding an opening, your partner must show you that you can be struck; usually with an elbow strike, a slap to the head, or a hand on the neck or spine.  In training this doesn't have to injure your opponent, but it must convince them that they have made themselves vulnerable to damage.  Of course, in a Pure Fight, you can still continue to fight with some damage, so be careful not to presume that one strike is enough (but if you know how to chop, a chop to the back of the neck will sever the vertebra).  Similarly, if your opponent over extends, you must show them that you can dislocate their shoulder (cai).  If your opponent leans in, you have to presume they are willing  to sacrifice.  You have to presume that they are willing to take a strike to the head in order to strike you with their head, or wrap their arms around you and break your spine.  A partner leaning in with momentum, like a sumo wrestler, must be struck.  So in Pure Fighting training the better you get, the less you lean.

Tabby Cat actually had the audacity to say Taijiquan doesn't use strikes.  He says it isn't a striking system.  Look Tabby, in Taijiquan we fight using a ball, like a cat.  We don't point strike, or line strike, as Wang Xiangzhai put it, our "intent stays spherical."  This is because allowing our intent to come to a point, a line, an arc, or a ring will leave an opening. But that doesn't mean we don't strike.  Every movement in the Taijiquan form is a potential strike.  Period.  (Jianghu commented on that the same post.)

With multiple opponents, grappling is only used for sudden joint breaks.  You can damage and throw your opponent in less time and with less effort than it takes to seize and throw them.  In a Pure Fight you don't try to get your opponent to submit.  While it is always possible that a Pure Fight could happen in the shower or on the beach, chances are you and your opponents will be wearing strong clothes.  Grabbing or yanking clothing can be very effective, but it is not grappling.  Grappling gives the advantage to the bigger fighter.  Grappling in a multiple person fight leaves you vulnerable.

Now check out this video from the 60's.  They are training for a game, not Pure Fighting.  Watch at the end when the "loser" demonstrates how easy it is to get Stan Israel (the big guy) in a headlock.  Striking the neck would have been even easier.



Now jump ahead 40 years and watch Stan Israel's student Mario Napoli sweep away all the competition at an International Competition in the "birth place" of Taijiquan, Chen Village.



My hat is off to Mario Napoli.  Shirts off too!  A beautiful performance.  "Jiayou" America!  That must have been a load of fun.  But what did we learn?  First of all, the competition doesn't look very good.  Why?  Perhaps the old masters in China are too secretive.  Perhaps the highest levels of internal training never existed in Chen Village.  Perhaps the higher level masters had all left for Shanghai and Beijing by 1920.  It's pretty hard to avoid the conclusion that the training in New York has been better and more consistent over the last 40 years than it has been in Chen Village.

I don't blame Napoli for this, obviously Chen Village set the rules.  He played the game and he played it well, but that rule-set doesn't look like push-hands.  It appears to give the advantage to the thicker competitor.  Having long arms and legs is a disadvantage because you aren't allowed to slap, kick, or strike.  It looks a lot like Sumo.  Don't get me wrong, I love Sumo, especially "Skinny Sumo," but nearly everything they do seems like the opposite of what a Pure Fight form of push-hands would train.  If they were to put on Gi's, would they all lose to Judo guys?  How would a couple of college Greco-Roman wrestlers do with this rule-set.  I'm betting pretty good.

Despite my mellow temperament and fun loving, parlor game, deepen your intimacy approach to push-hands.  I've never lost sight of the Pure Fight.  Among my teachers George Xu, particularly, has never let me loose sight of it.  On the other hand, despite the fact that this is a really long post that took me all morning to write, I care a lot more about dancing than I do about push-hands.

I've never been to a push-hands competition (or a Pure Fight for that matter!), but  I wonder if there is a rule-set that would make me happier.  Would disqualifying a competitor for grabbing, or leaning, or taking a step back, or losing their frame make a more interesting game?  That would be giving a whole lot of power to the judges wouldn't it?

I stubbornly believe it is possible to create a push-hands milieu where everyone agrees that the fruition of competition is to set everyone free by revealing our true nature-- through the cultivation of weakness.  Training for Pure Fighting, does not require aggression, it does not require us to give up even an sliver of our true nature.

Oh well, it's a good thing we have so many fun things to try.

Fighting is like Performing

The possibility of freezing in a fight, particularly during a surprise attack, is real.  Even for experienced fighters.  Even if we don't freeze, there is a high likelihood that we will experience some distortion of time.  This can be anything from an inability to remember anything that happened, to seeing the event play out in slow motion with very particular details.  The same is true for our perception of space.  We may feel anything from a total narrowing of perception, as if we were looking down a tunnel, to a sense that we are safely floating above the action observing the entire scene.

If I didn't hear  dismissive comments all the time like, "My martial art isn't pretty, but it works!"  I probably wouldn't harp on this point so much.  Folks, if it doesn't apply aesthetic considerations, it ain't martial arts.

As every experienced performer will tell you, freezing during a performance is a real possibility.  It's called stage fright and it feels like your whole body is wrapped up in plastic wrap.  Performers also sometimes have the feeling that they just stepped on the stage, and now they are stepping off--an hour performance can feel as if only a second or two has passed.  A performer can have the feeling that they can just languish in the time they have to take the next action, as if time were standing still.  Likewise, a performer can go through an entire show with out remembering or even noticing that there is an audience out there.  Or they may find themselves stepping out of the performance and watching it from above.

And just to beat a dead horse, Sgt.  Rory Miller has made a big deal of how important it is to give yourself permission in advance to brake social norms, like being nice or polite.  If you have to defend yourself, you have to utterly discard being nice.  The stage is a social environment where we can safely be horrible to each other.

Performance and Martial Arts are one tradition, not two.

No Word for Trance in Chinese

Fundamentally I believe I’m running into the epistemological debate which is at the foundation of the difference between European and Asian Cosmologies. Namely that external agents cause events (European), verses, all events/things are mutually self-recreating (Asian). The idea that there are external agents responsible for what happens requires that we create a continuum of effect, a measure of just how much a particular agent exerted itself on another agent. Thus we make a distinction between someone in a trance (only partly in control) and and someone possessed (fully in control).... Yes, robots. The science of physiology, the study of anatomical function, is quickly heading in the direction of declaring that we are robots. Free will appears to be an illusion, disconnected from what we actually do. Consciousness is actually fated. Awareness is just a biological mechanism.
Read More

Having a Ball Performing Martial Arts

I couldn't help but comment on this little tiff.  Chris started it over here on Martial Development.  I think it relates to Chiron's comments on commitment.

Basically they are excited about a guy who chopped his arm during a martial arts ritual.  I've been blogging about this stuff all year.  Here are a few back posts:

The Real History of Martial Arts and Trance

The Origins of the Boxer Uprising

More Spirit

What David Mamet Understands

Basically it's all performance, even if sometime in the future it might be the thing that saves your life.  But even if it does save your life you won't know for sure that some other factor didn't intervene.  Perhaps your attacker slipped, or better yet he had a flashback to a Flintstones Episode he saw when he was nine and forgot to keep killing you.

Here is a real video!  One that demonstrates why the greatest performers are also the greatest predators! (Watch the whole thing, it keeps getting better.)

Top Predators Practice Internal Martial Arts

nuwafuxi01I’ve been working with the “ball” material I wrote about in the last post and I’ve decided that there is an other way to explain it.

The top predators I’m likely to see in San Francisco on any given day are falcons, hawks, cats, and raccoons.  Occasionally I see a coyote or a heron too.

All of these predators are able to fluff up their bodies.  We tend to think of these moments of fluffing up as autonomic responses to fear because they parallel the goose bumps we get when we are watching a horror movie.  We also learn in school that some animals fluff up so that they will look really big to an attacker or a competitor,  and that has a parallel in the expression “I feel pumped up” which athletes sometimes use.
But of course we don’t know for sure why these predators fluff up and we definitely don’t know whether or not they consciously control it.

Nuwa&fuxiI used the term autonomic above.  The nervous system is divided into two types of nerves, the ones that control obviously voluntary actions (yes that would include ear wiggling even if you aren’t very good at it yet); and nerves that control much less voluntary things like pupil size and heart rate.  The less voluntary system is called the autonomic nervous system and it is also divided into two parts. One part that is active when you take a deep relaxing breath while sitting in a hot tub, and another part that is active when you hold your breath, tense up your muscles, pull back your lips and grit your teeth.  The relaxing nervous system is called para-sympathetic, the stressed out nervous system is called sympathetic.  (I know the names are ridiculous, they refer to anatomy you only see when you are doing a dissections.)

The ball practice that I wrote about yesterday is the practice of making your whole body fluff up and its opposite, shrink-condense.  This happens at the most outer layer of the physical body, between the muscles and the hair follicles.

In this practice it is key that you keep your breathing relaxed, that you do not activate the stressed out nervous system even a little bit.  Through this practice you will eventually be able to do more than just fluff up and shrink-condense.  You will be able to spontaneously change the entire surface of your body in any way you want.

I suspect that the top predators are able to do this without becoming stressed out, while prey, like bunny rabbits, only do it when they are stressed out.

This kind of practice has lots of health benefits but the fighters out there may be thinking, “How could I possibly fight using such a subtle mechanism?”  The answer is that the practice trains your body to not get stuck, to keep changing even in a situation of stress.  It will increase your power too, because there will be less inhibition in your body.

And of course when the predator ball becomes second nature, you don’t think about it, it just becomes part of everything you do.

The following Hagiography is from To Live As Long As Heaven and Earth:

"During the reign of Emperor Cheng of the Han, hunters in the Zhongnan Mountains saw a person who wore no clothes, his body covered with black hair. Upon seeing this person, the hunters wanted to pursue and capture him, but the person leapt over gullies and valleys as if in flight, and so could not be overtaken. [But after being surrounded and captured, it was discovered this person was a 200 plus year old woman, who had once been a concubine of Qin Emperor Ziying. When he had surrendered to the 'invaders of the east', she fled into the mountains where she learned to subside on 'the resin and nuts of pines' from an old man. Afterwards, this diet 'enabled [her] to feel neither hunger nor thirst; in winter [she] was not cold, in summer [she] was not hot.']
The hunters took the woman back in. They offered her grain to eat. When she first smelled the stink of grain, she vomited, and only after several days could she tolerate it. After little more than two years of this [diet], her body hair fell out; she turned old and died. Had she not been caught by men, she would have become an [immortal]." (Campany 2002:22–23)

"The earliest representations of Chinese immortals, xian (?), dating from the Han Dynasty, portray them flying with feathery wings (the word yuren ?? "feathered person" later meant "Daoist") or riding dragons."

[Thanks Wikipedia, for saving me from having to type these two quotes in myself!]

The Ball

George Xu used a surprisingly counter intuitive definition of a ball the other day.

The term "ball" gets used in martial arts and qigong all the time.  Of course there's "ball up you firsts," but there are lots of other uses.  The term ball is used as a metaphor, a verb, and as a spacial description.  George Xu was using it to mean something else entirely.

Here are the most common uses of "ball'

  • Imagine you are sitting on a large ball

  • Imagine you are holding a ball in your palm

  • Imagine you are holding a ball using your arms and torso

  • Imagine you are inside of a ball

  • Imagine a ball next to you or behind you

  • Turn, roll, bounce, shake, spin or compress and expand one of the above balls you have imagined (but actually do the movement

  • Align your body and limbs in arcs, which are part of imagined balls, now move the balls

  • Have your arms connect to each other through your opponent (this one is actually a ring)

  • Connect your arms to each other or a leg or both legs, or through space using an imagined ball


I could probably keep going.  Am I missing anything big?  Any other uses of the term ball in martial arts?

The definition George Xu gave me was in someways more concrete.  He said a ball, like a basketball for instance, has a skin, a surface thickness.  As a ball inflates, deflates, rolls or bounces, the dynamic pressure on the surface of the ball must change.  The surface of our physical body is like the thick skin of a basket ball.  It is capable of changing in tone, or being stretched around a curved surface.  Use the surface of your body like a ball.

When you practice gongfu, you must always "have a ball."

skinball4ballsdeball