The Yin–Yang model that explains everything
Most people think running is just “go out and run”.
But running is a constant negotiation between Yin and Yang, and when one side dominates, the body pays the price.
Let’s break it down simply.
🟣 Yin in Running = Absorption
Yin is everything that happens when your foot hits the ground:
• absorbing force
• controlling the landing
• organising joints
• storing elastic energy
• shaping the body for the next step
If Yin is weak, you can’t absorb force properly — your landings feel heavy and inefficient.
If Yin is too strong, you land beautifully… but you can’t bounce off the ground quickly.
You feel slow, flat, and powerless.
Both create long‑term problems.
🔥 Yang in Running = Expression
Yang is the push‑off:
• expressing force
• projecting the body forward
• pushing against the floor
• releasing stored energy
If Yang is weak, you can’t push off hard or move fast.
If Yang is too strong, you slam into the ground with no control, no strategy, and you waste energy.
Different imbalance → different problems → different injuries.
🌀 The Full & Empty Principle (The Missing Link)
Running is not just Yin and Yang at one time, in fact
During gait:
The stance leg + opposite shoulder = FULL (Yang)
• heavy
• grounded
• force‑producing
• pushing down and back
This is the hard Yang that propels you forward.
The swing leg + opposite shoulder = EMPTY (Yin)
• light
• lifted
• receiving momentum
• preparing the next step
This is the Yin that catches the wave created by the Yang.
And here’s the magic:
👉 after push off, when force has been released,
the empty side is about to become the full side,
and the full side that has just released the yang energy, is about to become the Yin side.
This constant exchange is what makes running smooth, elastic, and efficient.
When this exchange is off, injuries happen.
🧩 When Yin Is TOO Strong (and Yang Too Weak)
Too much absorption, not enough expression
This is the runner who collapses into the landing, sinks, folds, wobbles and might struggle with achieving time goals and see improvement in their pace/speed.
Common injuries:
• joint instability
• ligament sprains
• meniscus irritation or tears
• ankles rolling
• hips or knees “giving way”
• chronic instability patterns
Why it happens:
Force is absorbed in the wrong shape,
so passive tissues take the load instead of active tissues.
This is Yin without Yang,
absorption without reaction.
🔥 When Yang Is TOO Strong (and Yin Too Weak)
Too much expression, not enough absorption
This is the runner who hits the ground hard, stiff, loud, over strides and struggles with pacing perhaps feels that running is too hard.
Common injuries:
• shin splints
• stress reactions / stress fractures
• patellar tendon irritation
• Achilles overload
• plantar fasciitis
• impact‑driven overuse injuries
• stiffness‑related pain
Why it happens:
Force is not absorbed,
so the body slams into the ground instead of working with gravity.
This is Yang without Yin,
power without control.
🧠 The Truth
Most running injuries aren’t random.
They’re Yin–Yang imbalances and full–empty timing errors.
And the solution is simple:
👉 Strengthen both Yin and Yang so your body can express fully and safely.
👉 Teach the body to absorb before it produces.
👉 But also teach it to produce after it absorbs.
👉 Build the landing before the push‑off.
👉 Balance softness with structure.
👉 Train the full–empty exchange so gait becomes elastic, not effortful.
In Qigong they say:
“Slow is fast.”
This means:
If you can control the body slowly in movement patterns similar to running,
you’ll be faster, smoother, and safer once you actually run.
🟡 A Simple Yin Drill for Runners
Add this once a week:
Slow Step‑Downs
• 5–6 seconds lowering
• 1–2 second pause at the bottom
• 3–4 sets of 4–6 reps per leg
This teaches your nervous system how to absorb force
and control the balance within the range of motion required by running.
And trust me…
your nervous system will thank me later.
🏁 Final Thought
Running isn’t just cardio.
It’s a Yin–Yang + Full–Empty practice.
When you train both sides, everything improves:
• performance
• efficiency
• joint health
• tendon resilience
• longevity
• how your body looks and feels
Balance the forces, and the body follows.