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What is Muscle Testing?
“The important thing is not to stop questioning”
This quote by Albert Einstein
serves as a powerful reminder to maintain curiosity and seek answers beyond what we already know. By questioning, we open doors to new knowledge and innovative solutions.

What is Muscle Testing?
Muscle testing, also known as applied kinesiology, is based on principles of biomagnetic energy and the idea that our bodies can provide feedback through muscle responses to various stimuli.
While our conscious mind may be largely unaware of these energies, our subconscious mind is significantly influenced by them. The subconscious can guide the body to respond positively to beneficial energy and to avoid or reject negative energy. These responses enable the effectiveness of muscle testing.
We can access this connection between the subconscious mind and energy by asking YES or NO questions and observing the body's responses.
I use the Sway Test as my primary form of muscle testing.
My body will reveal the answers through subtle physical responses (biofeedback) by either swaying forwards or backwards.
A “strong response” or “yes” answer is based on the idea that the body sways forwards towards truth, positivity, or congruency.
A “weak response” or “no” answer is based on the idea that the body sways backwards, away from negativity, falsehood, or incongruency.
How Reliable is Muscle Testing?
Muscle testing has been studied in scientific literature for decades. A landmark article published in 1984 in Perceptual and Motor Skills was the first laboratory study to support its potential value (1). The investigator observed: “To my surprise, I found that in double‑blind tests, people were slightly weaker when holding an unmarked bottle of sugar than when holding an unmarked bottle of sand of the same weight.”
Since then, more than 100 studies, including randomised controlled trials, have investigated the method, with a 2007 review suggesting scientific support for its use (2).
Physiological mechanisms have also been explored. Electromyographic research has examined how fatigue and task repetition affect the validity of strong versus weak muscle assessments (3), while neurological studies have shown changes in somatosensory evoked potentials during muscle testing (4).
Technological advances have added further credibility. Devices such as force transducers have demonstrated measurable correlations between muscle resistance and practitioner assessments (5).
In well‑controlled studies, muscle firmness has shown significant changes depending on whether a person is speaking the truth or a lie, with results achieving high levels of statistical confidence (6).
References
1) Radin, D. (1984). A possible proximity effect on human grip strength. Perceptual and Motor Skills.
2) Cuthbert, S. C., & Goodheart, G. J. (2007). On the reliability and validity of manual muscle testing. Chiropractic & Osteopathy.
3) Leisman, G., Zenhausern, R., Ferentz, A., Tefera, T., & Zemcov, A. (1995). Electromyographic effects of fatigue and task repetition on the validity of estimates of strong and weak muscles in applied kinesiological muscle-testing procedures. Perceptual and Motor Skills.
4) Leisman, G., Shambaugh, P., & Ferentz, A. H. (1989). Somatosensory evoked potential changes during muscle testing. International Journal of Neuroscience.
5) Caruso, W., & Leisman, G. (2000). A force/displacement analysis of muscle testing. Perceptual and Motor Skills.
6) Monti, D., Sinnott, J., Marchese, M., Kunkel, E., & Greeson, J. (1999). Muscle test comparisons of congruent and incongruent self-referential statements. Perceptual and Motor Skills.
How can the muscle testing be performed if I am not physically present?
Many people typically associate communication with obvious signals such as facial expressions, vocal tones, gestures, and physical movements. However, recent evidence suggests the existence of a subtle yet influential electromagnetic or "energetic" communication system that operates just below our conscious awareness.
Biofields and Energy: Our bodies emit electromagnetic fields as a result of physiological processes. These biofields extend beyond our physical boundaries and interact with the environment around us. The heart, in particular, generates a significant electromagnetic field that can be detected several feet away from the body.
Resonance and Coherence: When two biofields resonate at similar frequencies, they can synchronise, facilitating the exchange of information. This concept is often referred to as energetic or cardioelectromagnetic communication.
What is Proxy Muscle Testing?
This extract is taken from The Emotion Code book on the subject of Proxy Testing:
"When someone has been given authority to act for someone else, we commonly refer to the authorized person as a proxy. A proxy is someone who acts as a substitute. In proxy testing, the proxy temporarily “becomes” the person being tested. By voluntarily putting themselves into the position of standing in for someone else, a proxy can be tested as if they were the subject of the testing, allowing their body to be used to benefit the subject".
Proxy testing is most useful when you want to help someone who is not present or who is inaccessible for some reason. Have a look at the Quantum Physics and Distance Healing Page for more information about the principles behind how distant healing is possible.
Theorigins and history of Muscle Testing
Article extract produced by Discoverhealing.com
100 BC - Easternknowledge of the meridians (or lines of energy in the body) and acupuncture or acupressure points have influenced the development of muscle testing techniques and originated centuries ago. The first documentation of these theories is The Yellow Emperor’s Classic of Internal Medicine.
Late 1800s - The Royal Central Institute of Gymnastics (G.C.I.) in Stockholm, Sweden founded a new occupational group that became the foundation for most physiotherapy and physical therapy.
1900’s - R.W. Lovett, an orthopaedic surgeon from Boston, created a process of manual muscle testing to evaluate muscle function and nerve damage in polio patients. His premise was that muscle testing could determine where nerve damage had occurred because muscles that tested “weak” were often associated with the same spinal nerve.
1949 - Two physiotherapists named Henry and Florence Kendall continued to work from Lovett’s premise and built their own model for muscle testing. They published their combined ideas in the book Muscles: Testing and Function.
1960s - A chiropractor in Detroit named George Goodheart used the information Kendall and Kendall had collected in his chiropractic offices. Through his experiences testing the client’s muscles, Dr. Goodheart found he was able to provide additional healing beyond chiropractic alignment. He discovered that some clients experienced a clearing of additional issues once he had balanced their muscles and identified associations between chiropractic techniques and Chinese medicine. He called this new practice Applied Kinesiology.
Early 1970’s - Interest in George Goodheart’s study of Applied Kinesiology grew, as he lectured at conferences across America. He took on students and taught them his methods. These students in turn led study groups where they shared information with new students and developed their own methodology and systems for testing.
Late 1970s - One of Dr. Goodheart’s students, Dr. John Thie, theorized that muscles tested differently depending on the stress they were under. This knowledge led to an assertion that muscular symptoms were connected to imbalances. These imbalances could be related to energy blockages, physical, mental, emotional, spiritual, or nutritional issues.
Early 1980s - Another student of Dr. Goodheart, Dr. Alan Beardall, developed his own system of over 250 specific muscle tests. These specific tests were meant to isolate major muscles of the body. He also developed the concept that the subconscious mind could express itself through muscle testing with strong or weak responses correlating with ‘yes’ or ‘no’ answers.
Mid-1980s - Richard Utt developed an additional method of muscle testing which he called Applied Physiology. This included multiple muscle states (rather than the binary ‘weak’ or ‘strong’).
Late 1980s - American scientist Charles Krebs added an additional element to muscle testing with the development of Learning Enhancement Acupressure Program, or LEAP. Krebs did extensive research into the brain and nervous system, kinesiology techniques, and energetic sciences.
2007 - Chiropractor Dr. Bradley Nelson tapped into his 20 years of experience to create The Emotion Code, using muscle testing to find and release Trapped Emotions and imbalances.
Present - Muscle testing has evolved into a diverse range of evaluation techniques utilised by many practitioners who see its benefits. Millions of practitioners worldwide use muscle testing in many different ways.
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