The Hidden Masters of China and the Limits of Human Anatomy : When Bones Learn to Become Steel
by:
lim ju boo - Chinese name - lin ru wu ((林 如 武)
Two nights ago I was watching China CCTV 17 where they normally show agriculture in rural China. Even in the most rural areas of China their agriculture is so advanced that they are able to use high tech technology to produce sufficient food not only to feed their massive population of 1.413 billion people (2026) - more than adequately and nutritionally, but they are even able to export their agricultural and food products to other countries. Their population is second only to India at 1.46 billion. India officially overtook China as the world's most populous country in April 2023.
China has over 3,300 local, regional, and national TV channels. Of these, the vast majority are broadcast in Mandarin and local dialects. There are only 2 dedicated English-language television channels operated by the Chinese state broadcaster, namely, CGTN and CGTN Documentary are in English. But here in Malaysia I can only receive 65 CCTV channels, and all are televised in Mandarin.
CCTV 17 is China's Agricultural and Rural Channel meant only for their domestic Chinese viewers which frequently also showcases incredible regional talents, martial artists, and rural "hidden masters" is a masterclass in extreme physical conditioning.
Among the countless the super-human stunts they do there, there was one I saw showing a man 75 kg in weight lying forward using only his two last fingers to support his massive body to do pumping exercises up and down.
I was completely amazed. Being interested in physic and mathematics - besides other scientific fields - medicine and nutrition, I started to calculate the forces exerted only on his two last fingers, and whether the massive forces applied would fracture his tiny fingers?
Here’s the final result of my calculation.
For a 75 kg man performing a two-finger push-up (pump exercise), the total force exerted is approximately 735.75 newtons (N), and the pressure exerted on the fingertips is roughly 1,635,000 Pascals (Pa) or 237 psi.
Below are the details how I calculated it.
First, Identify the Gravitational Force.
The total force exerted by the man's body is his weight which is the product of his mass and the acceleration due to gravity (approx. 9.81m/ s2)
W = m x g
W = 75 kg x 0.81 m / s 2 = 735.75 newton (N)
This is the total force the ground must push back with to support him while he is off the ground.
The second step is to estimate the contact area (last two fingers)
Pressure is defined as force (F) divided by the area (A) over which it is applied:
P = F/A
For this calculation, we assume each fingertip has a contact area of roughly =
2.25 cm 2 (1.5 cm x 1.5 cm)
Area per finger = 2.25 cm2 0.000225 m2
Total area for 2 fingers - 0.00045 m2
Third step is to calculate the pressure
by using the pressure formula which I presume everyone here knows and has learnt during their physics class in school
P = 735.75 newton (N) / 0.00045 m2 = 1,635,000 Pa (approximately)
The standard tire pressure units (psi) is approximately 237 psi. For comparison, this is about 7 times the pressure on his little fingers then inside a typical car tire - simply amazing.
Final result is :
The force exerted is 735.75 newton (N), and the resulting pressure is approximately 1.64 million Pascals
The pressure of 1,635,000 Pa is equivalent to 16.14 standard atmospheres (atm), and the force is 735.75 newtons (N).
Atmospheric Pressure Equivalent:
The pressure on his fingertips is equal to 16.14 atm.
1. One standard atmosphere equal 101,325 Pascals.
2. This is 16 times normal sea-level air pressure.
3. It equals the crushing pressure 150 meters underwater.
Force Equivalents
The total downward force remains 735.75 Newtons.
1. Equals 75 kilograms of force (kgf).
2. Equals 165 pounds of force (lbf).
3. Matches the gravitational weight of the entire body
For an untrained individual attempting this would almost certainly experience severe bone fractures and torn ligaments. The calculated force and pressure push the human body right to the edge of its structural tolerances.
Bio-mechanical data reveals exactly how the last two fingers (the ring and little fingers) handle these forces and why dynamic "pumping" makes the scenario incredibly dangerous.
Bone Fracture Limits (The Pinky vs. 735 N)
Human cadaver studies on finger crushing and jamming show that the structural limits of finger bones are highly dependent on alignment:
Pure Axial Loading (Perfect Alignment):
Human finger bones (phalanges) are surprisingly strong when compressed straight down from the tip. Studies show it takes roughly 1,485 to 1,833 Newtons of pure axial force to fracture a pinky bone.
The Reality Check:
Because our total calculated force is 735.75 N, the bones could theoretically support the weight statically, but only under absolute perfection. The moment the man pumps up and down, momentum adds dynamic shock loads that can easily double the force past the 1,500 N failure threshold.
Ligament and Tendon Rupture (The Real Weak Point)
While the bones might survive a static hold, the ligaments and tendons are highly likely to tear during dynamic movement
Ligament and Tendon Rupture (The Real Weak Point)
While the bones might survive a static hold, the ligaments and tendons are highly likely to tear during dynamic movement
1. The Shear Force Threat: A push-up is not perfectly vertical. As the body moves up and down, the angle of the arm changes, translating the vertical force into lateral and hyper extension shear forces on the finger joints.
2. Collateral Ligaments: The collateral ligaments stabilizing the sides of the distal interphalangeal (DIP) and proximal interphalangeal (PIP) joints fail at much lower thresholds when subjected to twisting or bending.
3. Volar Plate & Extensor Tendon Tears: Under 735 N of hyper-extension force, the volar plate (the thick ligament preventing the finger from bending backward) or the extensor tendon would experience an avulsion rupture. The tendon would literally tear a piece of the bone away with it (a "Mallet Finger" or "bony pilon" fracture)
How Elite Athletes Defy This (Wolff's Law)
This brings me another thought. I often wonder how Shaolin monks or elite martial artists manage to do two-finger push-ups without their hands exploding. They rely on a biological process called mechano transduction?
Wolff's Law of Bone Adaptation:
When bones are subjected to progressive, sub-fracture stress over many years, they rebuild themselves to be denser and thicker. An elite practitioner's finger bones can become significantly thicker than an average person.
1. Cortical Bone Denser Tuning: The outer layer of the phalanges adapts specifically to handle axial loads – evolution and adaptation during adverse conditions is something I can talk about confidently - I did my postdoctoral in evolution at Cambridge.
2. Ligament Hypertrophy: Connective tissues and tendons thicken gradually over a decade of training, raising their failure threshold well above the baseline 735 N requirement.
If an average, untrained 75 kg person tried this today, the combination of joint misalignment, lack of bone density, and sudden dynamic shock would cause immediate catastrophic structural failure of the hand.
When I saw that stunt man performed this on CCTV 17 television, they are leveraging an extraordinary blend of lifelong biological adaptation, mechanical trickery, and specialized techniques to bypass the standard human breaking points.
The "Claw" Geometry (Protecting the Joints)
As a former research medical scientist I normally pay hairline details to whatever I watch. I closely watch the footage of masters performing these stunts on CCTV 17, they almost never press down with perfectly straight, flat fingertips. Instead, they use a tightly locked "Claw" position (highly prominent in Shaolin One Finger Zen training).
1. No Hyperextension: By arching the fingers so the joints are bent slightly outward, they prevent the joint from collapsing or hyperextending backward.
2. Skeletal Stacking: This transfers the immense 735 N weight directly down the longitudinal axis of the bones. It bypasses the vulnerable ligaments and turns the finger into a rigid, bone-to-bone pillar.
Lifelong Bone Densification
Many of the individuals featured on CCTV 17 have practiced traditional conditioning methods since childhood. Decades of striking hard surfaces (like bags of rice, sand, and eventually iron filings) fundamentally rewrite their biology.
Micro-Fracture Healing:
Every time they train, they create microscopic fissures in the bone. The body overcompensates by filling these gaps with calcium, resulting in cortical bone thickening.
The "Iron" Result:
By adulthood, a practitioner's pinky and ring finger bones can possess a cross-sectional density vastly superior to an ordinary person's, easily raising their structural failure threshold well beyond the 1,500 N danger zone.
Biomechanical Leverage Illusions:
While the stunt looks like they are holding up 100% of their 75 kg body weight on their fingers, physics tells us they are using clever weight distribution:
1. The Pivot Point: In a standard push-up, the feet remain on the ground. The feet act as a fulcrum, bearing roughly 30% to 40% of the total body weight.
2. The Actual Load: This means the fingers are not actually bearing the full 735 N (75 kg). They are bearing closer to 440 to 515 N (45 to 52 kg). While still an extraordinary and dangerous amount of pressure for two small fingers, it drops the load safely below the absolute mechanical snapping point of a conditioned human bone.
3. CCTV's "Hidden Masters" Culture
China's CCTV networks heavily document these physical anomalies because they tie directly into historical martial arts culture. Practitioners like Xie Guizhong (who famously set a Guinness World Record on CCTV for performing 41 one-finger push-ups in 30 seconds) or Yuan Tingjun (who can statically suspend his body weight on two fingers) are genetic outliers who have combined elite calisthenics with ancient "Iron Body" conditioning.
It truly is a "superhuman" feat, not because they violate the laws of physics, but because they have spent a lifetime forcing their anatomy to adapt to them. We call this “ Darwinian medicine”. Darwinian medicine (also known as evolutionary medicine combines evolution with medicine) applies the principles of evolutionary biology to understand why our bodies are vulnerable to disease.
While conventional medicine asks how a disease works, Darwinian medicine asks why natural selection has left us susceptible to it something. It is a branch of specialized medicine from evolution.
There was also another one I saw among hundreds of these super-human stunts they do there every day. This one was a girl who somersaulted backwards exactly on the same spot 75 times within one minute. I shall write a comment separately on this one in my next article as this concerns physiology and medicine.
I am truly very impressed and amazed by all these people in China.
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