08/12/2025
“Leon made an important observation, though he lacked the secondary muscular system — fascia.”
© MFIT
Why Releasing Fascia Changes Muscle Function — The MFIT Approach
Leon Chaitow made one of the most valuable clinical observations in manual therapy:
> “It has been clinically proved that it is better to stretch tight muscles first. After stretching the tight muscles, the strength of the weakened antagonists often improves spontaneously — sometimes immediately, sometimes within a few days, without any additional treatment.”
— Leon Chaitow, Muscle Energy Techniques, p.207
It remains highly relevant.
But it’s also important to note:
Leon made a crucial observation, although at the time he lacked the framework of the ‘secondary muscular system’ — fascia.
Today we understand fascia not just as connective tissue, but as a dynamic tensional system that modulates force, movement, inhibition, and neuromuscular balance.
This is exactly where MFIT advances the conversation.
---
Why Fascia Matters in This Context
Tight fascia or overactive myofascial chains do more than restrict motion — they:
🔹 inhibit their antagonists
🔹 disrupt proprioception
🔹 alter joint rhythm
🔹 drive compensations through the pelvis, ribs, and shoulders
Releasing the restriction first allows the nervous system to reset, and often the “weakness” resolves spontaneously — exactly as Chaitow described.
---
How MFIT Works With Fascia
🔹 Restores fascial glide and hydration
🔹 Normalises agonist–antagonist balance
🔹 Reboots inhibited stabilisers
🔹 Improves sensory feedback and motor control
🔹 Frees the whole kinetic chain from pelvis → diaphragm → shoulder complex
Fascia and muscle are interdependent functional systems.
When one becomes restricted, the entire chain responds.
MFIT works by harmonising this system — facilitating the body’s natural reset rather than forcing change.
©