Electricity and Physics

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MikeK
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Post by MikeK »

Jim, Sounds like you guys are talking about me. :lol: For the reasons you guys state I'm not much of a striker, or anything else for that matter, so I tend to go with dirtier techniques for S-D.
the most effective way to learn how to hit and hurt , rather than hit a bag , hit a training partner .... Nothing is as effective in learning to hit than hitting the human body .
I have to agree with Marcus on this. Somethings you just have to feel and do to learn how effective they are, or how ineffective they are against some people. Something else that I'm learning is setting the other person up is the other part of an effective strike.
I was dreaming of the past...
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Bill Glasheen
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Post by Bill Glasheen »

Stryke wrote: ya know what happens to those that sit on the fence dont ya :lol: :lol:


Don't worry, mate, I'm off the fence with one food firmly planted in a cow pie... 8O :lol:

********************************
Van wrote: Truth is that the majority of Uechi practitioners don’t know how to do side thrust kicks, the way they should be done properly such as in styles like TKD or TSD. Uechi does not teach this _ no such thing in our forms.

In the old days of the Mattson academy, our fighting team needed to go outside Uechi, to learn those and other ‘prevalent’ tournament kicking techniques on our own to get the job done, and that we did extremely well.
Amen to that.

I was fortunate in that I started outside Uechi Ryu where Hiroshi Hamada taught me how to do a proper Japanes yoko geri. From there I bumped into Ray Berry in Charlottesville (ask Ted Dinwiddie) who had a side thrust kick that had to be seen to be believed. This dedicated Shotokan practitioner and student of Oshima Sensei worked that technique and a lunge punch the way Uechika work their sanchin thrust, wauke, and front snap kick. I stole lots of good training ideas from them, and incorporated these and other TKD drills into my own routines. (The choreography I developed was given to GEM, and became part of my renshi thesis.) Over the past few years I got kind of lax teaching this stuff in class, because I wanted to focus more on Uechi concepts. Sadly in the last test, I noted how everyone's kicks in exercises uniformly sucked. So....

If you want the goods, you have to do the work.

*******************************************

Good post on the jab, Mike. I agree 100%. That person knows his stuff.

Muhammed Ali and Larry Holmes had the best jab in the business.

* As was mentioned in the article, their primary use was to keep the opponent at bay. Ali was vulnerable to left hooks, so used the jab every time he saw someone about to move in, or planting the front foot.

* Ali also admittedly did not have a "knockout punch", so relied on combinations to bring his opponents down. The jab set things up. (The sequential striking Jim is talking about).

* And finally... Ali perfected the pronation of the jab on contact (see Mike's post above) to an astonishingly high level. What many don't realize is that he spent time with Jhoon Rhee working on this. In his early years, his opponents' faces at the end of matches often looked like hamburger meat.

And that brings me back to the topic at hand.

********************************************

Understand that moving people via throwing or breaking of the center is a key fighting ability. We are just focusing on the percussive vs. pushing technique, and how to do the former vs. the latter.

Much has been made of velocity in the ability to do damage vs. move someone. To some extent this is true when you consider the physics on a simple level. Van also talked about the proportion of muscle fibers being fast twitch as a key ingredient. Again, this is true to some extent on a simple level. That gets into the difference between strength and power.

Here's a good example from Wilmore et al.

In the following set of tests, three things were measured.

* Strength was determined by the one-repetition maximum (1-RM)

* Power was determined by perfomring the 1-RM test as explosively as possible. Power was caluclated as the product of force (weight lifted) times distance lifted divided by the time needed to complete the 1-RM.

* Muscular Endurance was determined by the greatest nunber of repetitions that could be performed using 75% of the 1-RM.

Athlete A - Bob
Strength - 200 lb
Power - 200 lifted 2 feet in 1/2 second, or 800 ft-lb/sec
Endurance - 10 repetitions with 150 lb

Athlete B - Ben
Strength - 400 lb
Power - 400 lifted 2 feet in 2 second, or 400 ft-lb/sec
Endurance - 10 repetitions with 300 lb

Athlete C - Bill
Strength - 400 lb
Power - 400 lifted 2 feet in 1 second, or 800 ft-lb/sec
Endurance - 5 repetitions with 300 lb

So in this simple test, Ben is twice as strong as Bob, but half as powerful and with equal endurance. Bill matches Bob's power and Ben's strength, but has half as much endurance as those other two men.

Ponder that test example above. It clears up a lot of misconceptions about fundamental athletic skills.

So why try to do a better bench if someone half as strong can be just as powerful? Look at the math above. It's easier to get stronger (make thicker muscle fibers) than it is to get faster on a fundamental muscular level (make the fibers contract faster). This is assuming, of course, that the athlete works on flexibility and movement so that the antagonistic muscles are not interfering with velocity.

That's the fundamental principles.

***************************************************

But wait, it's more complex than that!!! 8O

How can a former long distance runners and average strength guy such as myself been so good at throwing a fastball and doing wicked roundhouse kicks? Ahh... Now we get to the good stuff! 8)

Marcus touched on the subject a bit with his comment about lateral techniques. I'm curious about how Marcus is built. Personally I fit the profile of a "crane."

"Big Unit" throws some wicked fast pitches even in his forties, partly because of his build. While he may have average strength, the distance from those pectoralis and deltoid muscles and the ball is incredibly large. So this means the velocity on the end of that long arm is much higher than for the guy with the shorter arm. And that's just one part of his massive frame. A full windup pitch (done with the bases clear) is a whole body motion with a whole lot of leg and hip movement leading into the shoulder, arm, wrist, and finally finger movement. With him, we see two things. First, we see the advantage that the longer-armed guy can bring onto the field. (It's always those short-armed guys doing the massive bench presses, no??) With certain movements done in certain ways, the veolocity really can get pretty impressive.

But it's more than the geometry (moment arms) involved. Now we go from muscular to neuromuscular power.

When you watch Dana do her Nakamatsu-inspired sanchin thrusts, you see someone who has captured the concept. In essense what she does is make energy go from one part of her body to the next. It starts from the legs/hips, and goes through the spine to the shoulders, arms, and finally hands. As the energy wave goes up the body, she pre-stretches those muscles VERY QUICKLY. The dynamic stretch reflex is proportional to the speed of lengthening of the muscles. So as the wave goes up the body, each muscle group does a stronger contraction than it normally would because of the rapid pre-stretching of the muscles. A person properly trained knows how to go with the dynamic stretch reflexes at each point in the body and add in intentional contraction. The result is like a boulder that gains speed as it goes down a very steep hill.

But this goes beyond a single technique. Athletes who learn flow can cause prestretching in various parts of the body that they can take advantage of. Good kata (like the Uechi big three) have excellent concepts of movement build right in. If you know how to flow, you will realize the grammer in the forms, and realize that sometimes it has little to do with the target and more to do with generating that energy wave.

This is why Muhammed Ali did not have a "knockout punch" and yet was able to knock out so many of his opponents. He understood combinations. He understood how to flow. He could get the wave going in his body, and release the energy on the right place at the right time.

Easier said than done... :lol:

We modern fighters can learn all this via good kata training, plyometrics, good prearranged partner training, etc., etc. It's all in the basics. You just need to know it is there, know how to exploit it, and then just do it.

******************************************

And finally...

I have often told my students that strikes and thrusts are a 2-phase affair. Phase one is the speed you develop going from point A to target. Phase two is what you do once the weapon hits the target.

If you look for it... Our kata have things that we do - or SHOULD be doing - at the moment of contact. Sadly we train that out of ourselves in sport sparring. But you can still work on elements of it in competitive sports such as boxing where hitting is allowed.

Take a simple punch. Karate/boxing have one way to add in an extra "oomph" at the point of contact. It is in the pronation of the forearm that happens as the person continues to penetrate the target. WCK has the radial deviation of the wrist. Six of one and half dozen of the other. Each is a way to add in an extra energy component. The pronation introduces shear forces. The radial deviation just introduces more linear penetration.

Makiwara training also is there to teach folks about this second phase of a technique. After contact, the person is supposed to add in an extra contraction component. You don't bounce off the target like a good tournament fighter. You go from high velocity, low resistance to low velocity, high resistance movement. And you CONTRACT against that resistance with your whole body. That happens for about the amount of time that you are focusing your sanchin thrust at the end of extension.

Snapping techniques accomplish that extra energy transfer in a slightly different way. The pronation of the boxers jab is a good example. It's less about continued penetration, and more about speed and surface damage.

The biggest problem we dojo people have IMO is we don't hit things enough. Furthermore, we should be trying to hit different types of things. Makiwara teaches one kind of damage power. But hanging things that can move if you don't hit them fast enough teaches you more about the hooking and whipping techniques. One really great tool I picked up from Dave Machin is used X-Ray paper. Unfortunately HIPAA makes it more difficult to get used stuff (privacy concerns with the names on the X-Rays). But you can still order the stuff new for a price. X-Ray paper gives a fantastic "report" when you do things like a good backfist, a roundhouse kick, a hook, a spinning hook kick, etc.

Focus mits help as well.

One thing Hiroshi Hamada used to frustrate us with in teaching whipping techniques is a simple candle. The idea was to blow the candle out with the speed of your technique, without touching the flame. Give it a try; it'll humble you until you get it down.

I supposed that's enough bandwidth for now. :)

- Bill
Last edited by Bill Glasheen on Tue Apr 19, 2005 12:53 pm, edited 1 time in total.
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Dana Sheets
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Post by Dana Sheets »

Tips thus far (in no particular order):

1. Hit bags of sand that are fixed against fixed surfaces
2. Hit wooden dummies
3. Hit trees
4. Hit people
5. Build personal body awareness
6. Train plyometrics
7. Use x-ray paper...Bill - what the heck do you mean with this one? Use it how?
8. Hit sequentially
9. Hit different things differently
10. Contract after hitting moving or unmoving objects to enure that your body knows the proper alignment it just used to transfer power

One of those other "givens' that needs to be restated for this thread is that if you plan to hit with a certain fist you need to train the fist. You body just won't let you throw full power if your body doesn't believe you can hit with it. The fist is a notable exception because of the evoluationary element that your fist should be closed around some kind of weapon that you're swinging. But in my experience with shokens, bushikens/boshikens, kokens, hirakens and the link - if the weapon isn't ready - the body will keep you from going full power.

Hmmm...probably more tips in the thread - I'll go back and dig.

So on a scale of 1-10 where does ye old kicking shield land as a tool for teaching students how to hit for damage? Is a focus mitt better?


Dana
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jorvik

Post by jorvik »

If you think back to Dana's original example then the big guy doing the punch had plenty of power, but he had very poor technique. Really it is no good having loads of power if you use it incorrectly, how you develop that power is another question, what we should be asking is can we do a technique that will drop our opponent? :roll:
imagine if this big guy had done a backfist to the green belts temple 8O ...doubtless the green belt would be in a morgue by now :cry:
surely it would be better to find the techniques that need less power and use them......in boxing it is usually a "glancing" blow across the chin which causes a knockout and not a big power punch......I believe that this causes an effect in the inner ear, which is why you often see the guy who is hit staggering around......essentially it is a nerve strike or kyusho strike and should not really be considered as just a big punch.....................a small weak woman will never knock down a big strong man by power alone, she must use good technique, some power and speed .but it must be used intelligently against a weak spot.such as the temple or solar plexus.........and then again a women is much more likely to be attacked to be raped, so she will need to be able to incorporate some kind of anti-grappling moves...really I suppose it goes back to a lot of what Van said and why there are no punches in the original three katas
Marcus and Van.....glad you are enjoying the "highland Park"........if I come across anything better I'll let you know ( I haven't so far 8) ) :wink:
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Bill Glasheen
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Post by Bill Glasheen »

jorvik wrote: If you think back to Dana's original example then the big guy doing the punch had plenty of power, but he had very poor technique.
I would disagree here. He had plenty of strength, but was not able to generate very much power. See my example from Wilmore above. The key difference here (simplistically speaking) is lack of speed and/or lack of focus on the point of contact.
jorvik wrote: imagine if this big guy had done a backfist to the green belts temple ...doubtless the green belt would be in a morgue by now
On the contrary, I would think his backfist may be even more glaringly deficient. A backfist is all about speed where a thrust also has mass (continued delivery of energy after point of contact) behind the technique.

Remember that kinetic energy is proportional to mass times velocity squared.
Dana wrote: Use x-ray paper...Bill - what the heck do you mean with this one? Use it how?
Imagine watching your favorite doctor show, like ER. Doctor Dogood consults the radiologist about an X-ray just taken of a patient who came in from a car accident. The radiologist takes this big piece of plastic thingie, and puts it up on a light board for both of them to examine. "Yep... she fractured her tibia right there, Dr. Dogood!"

That translucent plastic thingie - about 50% bigger than a sheet of notebook paper - is the X-Ray film I am speaking of. I believe the average piece is 14" by 17", but they come in various sizes. It is made of the same material that you put into your 35 mm camera, only it's one big-a$$ed piece of it.

See Google on X-Ray Film

You hold it by the edge, and have someone do a speed technique on it. When they hit it slowly, they will just push the X-ray film away. When they hit it fast (with good power), it will make a really cool noise.
Dana wrote: So on a scale of 1-10 where does ye old kicking shield land as a tool for teaching students how to hit for damage? Is a focus mitt better?
The kicking shield is great for teaching thrusting techniqes that have a strong "mass" component (time on target) at the end. They are especially good at teaching techniques where you use movement of the center as a major ingredient. I sometimes refer to the technique as "jousting."

The focus mitts are better at teaching speed, targeting, and technique selection. They make loud noises when you hit them with proper speed, and you can have your partner move them around a bit.

Focus mitts and X-ray film are also much better for use in teaching people to do techniques with follow-through (e.g. spinning kicks, looping hooks, upper cuts, etc.). A weapon like the nunchaku is all about follow-through whenever holding one end and attacking with the other.

- Bill
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JimHawkins
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Post by JimHawkins »

Well if anyone is out of X Ray film they can use plain paper. :lol:

Hanging regular paper, like using a string and tape is something else I used to do. This is a good way to work speed and with paper you can work on putting holes in it with a Nukite or other pointy thingy.
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2Green
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Post by 2Green »

I use a plain roll of coarse brown paper towel.
It is infuriatingly difficult for the un-iniated to poke a hole in this simple hanging sheet.

I can now punch a hole in it consistently.

NM
Stryke

Post by Stryke »

So on a scale of 1-10 where does ye old kicking shield land as a tool for teaching students how to hit for damage? Is a focus mitt better?
I think a focus mitts far superior for circular technique , you get to drive through the target and it doesnt offer resistance , your body gets good feedback . For straight technique would be fine , as long as it`s more placed on the chest and theres some resisitnace there rather than being held out form the body .

I like kicking sheilds for Roundhouse and doing the Muat Thai style leg shots , But I dont Like them for the kicks youd consider Push kicks ... as i think it encourages that , I want no give when practicing those kicks , I myself prefer a concrete wall or something , but youve got to have your range a feel down to snap into a wall like that .

I feel a lot of power is how the body receives it`s feedback , programming it to expect certain resistance .

the hands a programmed by letting them drive through , the legs by knowing they cant push and must drive all the force into contact rather than through .

I make the exception on the roundhouse becuase I want to encourage the momentum and cutting action . different feedback different result .

try it , this kind of feedback training works .
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Dana Sheets
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Post by Dana Sheets »

Neil - PM'd you back.
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Bill Glasheen
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Post by Bill Glasheen »

Dana

I've kept the physics pretty simple up to now. But it gets a little more complex than this if you consider an engineering physics point of view. And as dweebish as it may seem to go there, I think this gets to the heart of what your instincts are pondering.

I will try to keep this simple enough on the math to make sure all appreciate the basic concepts.

On a very, very simple level, we can consider impact as a transfer of kinetic energy. As was mentioned before, the kinetic energy of a moving object is proportional to its mass times the velocity squared. Thus the big guy may be able to knock you back, but may not have enough velocity to transfer the energy he needs to send to the target to do the desired damage. The collision stays elastic, allowing the little guy to bounce back up and keep going.

Mass is important for creating energy. But velocity is much more important, as the energy goes up by the square of the velocity.

We know it gets more complex. We know we have Jimmy Malones out there teaching folks the concept of time on target. In other words, that fist is not a speeding fastball flying in the air about to bean the batter. That fist now is a bit like a projectile with a charge in it that detonates on impact. Or it's like a car that hits another car while one person still has foot on the accelerator. Now even more energy is imparted.

Yet still... The truth is, not all energy is created equal. A joule is not equal to a joule is not equal to a joule.

Remeber the Memorex commercials where Ella Fitzgerald would sing a note and shatter a glass? This illustrates a "quality" of energy that we've all been talking about but not really describing very precisely. What Ella was doing was sending energy confined to a single frequency (a sine wave at frequency f and amplitude A) to that glass. She was singing at the resonant frequency of the glass. You know what that resonant frequency is by "pinging" it with your finger. By restricting almost all energy out of her vocal chords just to this single frequency (plus some higher harmonics that allow us to recognize that the voice is "Ella"), she was able to break that glass with a minimum amount of effort. It is a cool trick that illustrates the frequency property of energy.

A strike or thrust in engineering or physics would be called an "impulse." Just as sunlight contains many frequencies of light that can be separated out by a prism, so too does an impulse contain energy across a broad set of frequencies. You and I may hit a target with the same total energy. But if I measured the impact with a strain gage within the target and performed a Fourier analysis on the electrical signal that came out, I would find a frequency spectrum "fingerprint" that would show differences between our two hits. If I do the integral across all frequencies, the value (total energy) would be the same even though your impulse was a sum of a set of sine waves of particular amplitudes and frequencies different from my own.

Using the Ella Fitzgerald metaphor, you and I may try to "ring someone's bell" (knock them in the head) each with the same amount of energy. But at a certain energy level, one person's hit may bring the person down where another may not. That depends a lot on the energy absorption property of the head (how it "rings") and the energy spectrum property of my hit.

Or lets take the light analogy. I have a blue light, and you have a red light. We shine it in the dark on a red object. The red object will absorb most of my blue light, energy, and will reflect most of your red light energy (which is the reason why it looks red).

Intuitively we know all this. We "ping" or "kick the tires" on things all the time. What we hear tells us something about the energy absorption vs. reflection properties of the object we have pinged or kicked. We are doing an impulse function test, and noting the system response.

If we are big and amazingly fast, all this doesn't matter. Every attack will be the "perfect impulse function" - an infinite energy impulse that contains all frequencies. Alas we are all mortal. So each of our impulses is a limited set of frequencies at various amplitudes. We try to broaden the spectrum with training, and increase the magnitude of the curve in the frequency domain. We also try to hit objects at angles and in ways that allow those objects to absorb different frequencies within our impulse in a way that will "shatter the glass." Sometimes this is brutal, such as the fracturing of a jaw. Sometimes it is like magic when certain frequencies tickle the person's CNS system in a way that disrupt CNS activity. We do the best we can with the cards we are dealt.

When we use various objects and toys to work on our strike, what we are doing is selecting things that "report" on certain critical parts of the energy spectrum. We even listen to the quality of the sound when we hit something, right? A good audiophile can even tell you what frequencies are coming out.

Now for the high energy "push" vs. the high energy "crack"... In general, the impulses that break things have higher frequency harmonics (more high frequency response), whereas the things that push have lower frequencies (more bass). Really good thrusts that lash out like a whip while someone is charging forwards have the whole deal. They break you in half AND send you flying.

Most of us are mortal though. We take what energy (power) we have, and work via technique to make the best of it. We also try to concentrate and target it it with our pointy thingies so we can do more with less - when our neurohormonal system permits.

In medicine, we "ping" things selectively almost by magic. With the right frequency spectrum in a ping, we can shatter a kidney stone inside a person floating in a water bath without hurting either tissue or bone. Our machine sings like Ella until the stone shatters. 8)

Hope this came across reasonably clear.

- Bill
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Dana Sheets
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Post by Dana Sheets »

Yes Bill - that makes sense. Many of the various descriptions of the varieties of "jing" encompass this discussion - but those are all in a foreign language and it helps to process it all out in native English.

(my favorite list of jing)
http://www.spheral.com/shaolinneipai/jing.html

Anyway...

Maximum power with maximum structure.
The structure varies for linear vs circlur impacts.

So structure, direction, speed, mass, and targeting.

And somehow doing all this enough so that the body does it without you. Your body learns fighting flow so that most of your thinking brain is bypassed.

Palm heel - under the chin slap across the face, slap downwards on an angle above the eyebrown
Boshiken/Bushiken - throat, LU1 & LV13, CV2 & CV24, ST 17 & ST26,
Hiraken can penetrate (armpit/eyes) or rake (back of hand or side of face)
Kakushiken - supraclavicle notch,
Koken - fingertips to inside of thigh or bladder
Koken - back of wrist to under the side of the chin or inside the wrist
Shuto - can strike (45 degree up) or rake (45 degree down) - neck
Shoken - throat, eye, neck, armpit, ribs, back of the head/neck
Sokusen - groin, inside of thigh, back of knee

...just thinking out loud...

ps
useful acupuncture point chart online:
http://www.yinyanghouse.com/acupoints.html
Click on the organ and you get a nice image iwth the point and how to locate them.
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Dana Sheets
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Post by Dana Sheets »

I'm a bit worried about slamming kicks and punches into things that don't move. That means there's quite a bit of return shockwave I'm asking my body to absorb. Fine for once in awhile but the long-term for that is ugly.

Those of you who regularly bash fixed objects - how often and how much do you think this kind of training should happen?

Dana
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Stryke

Post by Stryke »

Those of you who regularly bash fixed objects - how often and how much do you think this kind of training should happen?
Deffinately the draw back , this is a tough compromise , and Agree the risk for injury if overdone .

I probably do the side kick thing maybe once every couple of weeks , I bushiken solid objects just randomly but only maybe 10-20 at a time max ....

I feel the real issue injury wise is to ever have any locked joints when generating the force , Ive been conditioning my forearms against a solid 6 by 6 wooden post a couple times a week with no adverse effects .

with kicking the wall with a side kick I`m not going for full force , just getting the feel of having the force go directly into the ground , no pushing away .

the risk of injusry is primarily to joints , if the force is not locked there then injurys should be unlikely .

with any kind of feedback programming it`s quality over quantity though .

I feel when you get better at something it`s time to do it less , I think to many reps is detrimental programming once youve done the groundwork to get muscle memory down .

I take a similar programming aproach to stretching these days .

I dont recomend hitting solid things for everyone , especially novices , It`s just something Ive used to generate certain feel and feedback .

for circular force I think targets you can drive through and offer a little resistance are actually superior .
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eric235u
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Post by eric235u »

slightly off the main thread, but since we were talking about explosive punching,

Image

his system got shocked!
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Dana Sheets
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Post by Dana Sheets »

Absolutely - you see the way the other guy's head snaps around - that kind of twist on the spine and the CNS checks out and resets. That's the classic knock-out.
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