The Law of Opposites
As physiotherapists, we often see people trying to force their bodies into better movement. They stretch harder, push further, or repeatedly pull on tight muscles hoping they will eventually release.
Yet some of the most effective techniques work in exactly the opposite way.
Muscle Energy Technique (MET) is a hands-on treatment approach commonly used by physiotherapists, osteopaths, and manual therapists. Rather than forcing a joint or muscle into a new position, MET uses a gentle, precisely directed muscle contraction by the patient to help the body create its own change.
What Is Muscle Energy Technique?
Muscle Energy Technique involves placing a muscle or joint into a comfortable position, then asking the patient to gently contract specific muscles against a light resistance provided by the therapist.
The contraction is usually only about 10–20% of maximum effort and lasts for several seconds.
After the contraction, the patient relaxes and the therapist takes up the new range of movement. The process may be repeated several times.
It is gentle, comfortable, and actively involves the patient in the treatment process.
Why Does It Work?
Several physiological mechanisms are thought to contribute.
1. Post-Isometric Relaxation
After a muscle contracts, it often enters a brief period where its resting tension decreases.
This creates an opportunity to gently move further into range without force.
Instead of fighting tightness, we use the body’s own nervous system to reduce it.
2. Reciprocal Inhibition
The nervous system coordinates muscles in opposing pairs.
When one muscle contracts, its opposite muscle receives signals encouraging it to relax.
For example:
- Contracting the hip flexors may help reduce tension in the hip extensors.
- Activating the quadriceps can assist relaxation of the hamstrings.
- Engaging the abdominal muscles can reduce excessive activity in the back muscles.
This is another example of the body’s “Law of Opposites.”
3. Improved Joint Positioning
Many painful joints are not necessarily damaged but are moving inefficiently.
MET can help restore more balanced movement around joints such as:
- Sacroiliac joints (SIJ) and hips
- Lumbar spine
- Thoracic spine
- Ribs
- Shoulders
- Neck
Small improvements in joint mechanics can significantly reduce discomfort.
4. Increased Body Awareness
Because the patient actively participates, MET improves proprioception—the brain’s awareness of body position and movement.
Often people move better simply because their nervous system becomes more aware of where they are in space.
Muscle Energy Techniques and Yoga
Yoga practitioners often discover similar principles without realising it.
A common misconception is that deeper stretches require complete relaxation.
In reality, gentle muscular engagement often improves mobility.
For example:
- In a forward bend, lightly activating the quadriceps may allow the hamstrings to release.
- In a backbend, engaging the abdominal wall can create support and control.
- In hip-opening postures, activating the muscles around the hip may reduce the tendency to collapse into ligaments.
The most sustainable flexibility comes from strength and control throughout the range, not from hanging on passive tissues.
Why This Matters for Hypermobile People
People with naturally flexible bodies are often taught to stretch more.
The problem is that excessive flexibility is rarely the issue.
Control is.
Many hypermobile people spend years hanging into joints, relying on ligaments and joint capsules for support. This can contribute to pain, instability, and recurring injuries.
Instead of seeking the last few degrees of range, they often benefit from:
- Maintaining gentle muscle engagement
- Stopping short of end range
- Building strength within flexibility
- Improving joint position awareness
Sometimes less range creates more freedom.
Conditions Commonly Treated with MET
Muscle Energy Techniques may be useful for:
- Neck pain
- Headaches
- Rib dysfunction
- Thoracic stiffness
- Low back pain
- Sacroiliac joint pain
- Hip restrictions
- Postural tension
- Athletic movement restrictions
- Yoga-related overuse injuries
The Bigger Lesson
MET teaches us something important about the body.
Change rarely comes through force.
The nervous system responds best to safety, balance, and cooperation.
Sometimes the fastest way forward is not to push harder but to use the opposite approach: a little effort to create release, a little strength to create flexibility, and a little support to create freedom.
That principle applies not only to movement but to life itself. The body is constantly seeking balance between opposing forces. When we learn to work with that process rather than against it, movement becomes easier, more efficient, and often much less painful.
