01442 800400 Monday - Friday 8:30 - 18:00 Saturday 9:00 - 13:00 42 Lower Kings Road, Berkhamsted Herts HP4 2AA
Simon King

Simon King

Over 30 years Simon King has developed a deep and unique understanding of the importance of muscle reflexes and muscle strength in the maintenance of a healthy and pain-free body. He uses innovative treatment strategies to help patients become stronger and healthier so they can exercise and live without fear of illness or injury.

Did You Know?

Nerve messages that go TO the brain are called AFFERENT (towards), while those that come FROM the brain are called EFFERENT (away from).

Simon King is an expert in Afferent Input and using Afferent Input to treat and prevent musculoskeletal injuries.

Over thirty years in practice, Simon has always strived to understand the true origins of disease and ill health. Fascinated by muscle testing and the connections between nerves and muscles, he set about learning all he could about Applied Kinesiology and eventually became a diplomate of the ICAK in 1996. He has gone on to teach hundreds of practitioners the principles of Proprioceptive Medicine and Afferent Input.

With Jane Eastoe, he started the Naturality Wellness Centre in 2005 and has returned to the clinic after 6 years in Australia.

Simon is available Mondays, Wednesdays, Thursdays and Saturdays. His specialties include sports injuries, sports performance enhancement, chronic pain and disability.


How to Restore Your Robustness

Musculoskeletal Health

Did You Get Your Instruction Manual?

No? Then you’re probably missing valuable information that could help you live longer, healthier and happier.

Health shouldn’t be difficult. Most wild animals are incredibly healthy, flexible and strong, and they don’t have instruction manuals.

Of course, there is GENERIC good advice

Eat Well * Move Well * Think Well

In spite of everyone’s best efforts, adults in the UK are still losing 100 million work days per year due to low back pain alone.

We need a new approach.

Were you ever totally well? Yes? Most of us were well once.

Then something went wrong. Gradually, our ability to recover, heal and perform deteriorated.

Mostly, we don’t know what went wrong and we often blame the wrong things.

We might blame:

The Car Accident
The Fall
The Surgery
Our Age
Our Hormones

the truth is, we usually never really know why our body lost the ability to heal itself. That one thing that you think was the cause, may have just been the final straw. The real reason we are suffering is hidden in our history, sometimes never to be revealed.


THERE IS A WAY TO find out what YOUR weak link IS. The thing or things that is preventing you from being as strong and healthy as you should be.

The system is called Afferent Input and it’s a system he has personally taught to over 1000 chiropractors, osteopaths and physiotherapists.

Afferent input is sensory input that actually produces the nerve impulses that run the nervous system. Anything that activates a nerve sensor is afferent inputs o all physical therapies rely on afferent input. Simon just puts it in a reliable system that’s easy to learn.

Afferent Input can be used to both diagnose and treat a whole host of aches, pains and ailments. 

Simon King Teaching AFFERENT INPUT at a Recent Seminar

You don’t need to be an award-winning sportsman to benefit from Afferent Input. The tiniest imbalance in our bodies can cause chaos and can be traced back to anything from old fillings to an undiagnosed hernia.

Arram Eghoyan

Strongman and Personal Trainer

More about Simon

Simon grew up in New Zealand and had his first chiropractic treatment after falling off a chair at the age of six. That early treatment seemed to end his prior need for weekly blood tests that were searching for the origin of a “leukaemic-like” condition and ironically, low muscle tone. At the age of 14, the chiropractic philosophy that the body would look after itself if the nervous system was working properly seemed so appealing that he chose this as his future career. Simon also took up bike racing and made the NZ cycling team at the age of 17, competing in road and track events in New Zealand and Australia, including the Empire Games in 1980, which has given him an invaluable insight into the impact of sports injuries.


He started his chiropractic studies at the RMIT (then PIT) in Melbourne, being part of the first ever government-funded chiropractic course. He practiced for two years on the Gold Coast in Australia before taking up a teaching post at the Anglo-European College of Chiropractic in Bournemouth, England before setting up two large clinics in Retford and Grantham.

As his practice developed, he became fascinated by the fact that certain patients responded to treatment while others did not, and the difference could not be explained by current medical knowledge, so he studied and became proficient in Applied Kinesiology, a system of diagnosis based on manual muscle testing and became a diplomate of the International College of Applied Kinesiology in 1996.

The theory that became Afferent Input grew out of his desire to understand the facilitation and inhibition that are fundamental to Applied Kinesiology. He has been teaching Afferent Input to health professionals for 20 years and is currently practicing in Berkhamsted, Hertfordshire.

He is the founder of the Association of Afferent Input Practitioners, a growing group of health professionals putting afferent input to work in their practice.

Make an Appointment

Simon is available Mondays, Wednesdays, Thursdays and Saturdays.

His specialties include sports injuries, sports performance enhancement, chronic pain and disability.

The first appointment is £75 followed by £50 thereafter.

neck muscle testing

Make An Appointment

Tel 01442 800400

New Patient Consultation, Examination and Treatment £75 (up to 45 mins)

Follow-up Treatment or Advice £50 (up to 30 mins)

Preliminary Consultation and Examination (no treatment) £25 (up to 15 mins)

Complicated Cases or Referral from a Practitioner £100 (up to 60 mins)

See the Results of Afferent Input

for yourself
Low back pain solved by identifying a tooth problem
Low back pain solved by identifying a piercing problem
More strength from removing a piercing

Apply for a Complimentary Consultation

By Application Only - Treatment not included


In my mid 50s and fairly sporty – I developed a hip ache, aching joints, discomfort in my foot, pain when kneeling and various other “niggles” which physiotherapists and my osteopath couldn’t find a long term fix for. My Yoga instructor suggested I visit this clinic and saw a kinesiologist. I googled it initially and had it not been for the recommendation from her I would have been put off by the on line video of kinesiology in practice as their appeared to be very little “hands on” treatment. However, the result was astonishing! After the first half an hour of treatment I skipped out of the clinic without foot pain, was diagnosed and treated for thyroid problems (who knew?) had a hernia sorted out (again, a surprise to me) and my hip pain totally disappeared. Since then I’ve had one more visit after having a mercury filling removed from a tooth to finalise all the corrections and complete the treatment and feel better than ever. I realise now that just because we’re getting older we should not accept aches and pains as a natural progession of ageing! I now have a three month maintenance check up to ensure everything is working correctly and prevent future potential problems from developing. Worth every penny. –


I went to see Simon King at the recommendation of my son whose RSI had been dramatically eased after two Kinesiology treatments following 3 years of pain every day. The improvement continues to hold after 5 months. My problem is with arthritic knees. Xrays show they reveal “severe degenerative change”. Simon used Kinesiology (muscle-testing) to test the strength of my muscles explaining that they were not strong and not holding my skeleton in the right alignment so bones were rubbing against bone. He discovered the calcium I was taking prescribed since my hip replacement was not particularly good quality and was not being absorbed into my bones. He advised a seaweed based one which was not particularly expensive. I found Simon to be concerned, knowledgeable thoughtful and very skilled and hope he may be able to help me avoid a knee replacement operation.


“Hi Simon
Just a quick line to let you know that my mum, Maureen, had her metal crowns replaced with pure porcelain ones and I’m happy to report she is migraine free. She’s buying your book for her dentist who is very curious. She has to watch out for a little sensitivity on one front tooth, but sensitive toothpaste seems to take care of that. 15 years of pounding migraines that derailed her life, fobbed off by doctors as over anxious, dogged by crushing pain, and she’s pain free!
Rebecca, Shropshire”


Simon's articles

Why You’re Still Hurting

If your pain has lasted more than 3 months, or if there are certain movements you can’t do any more, it’s important to have your muscles checked for inhibition.
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Considering Knee Replacement?

If you or someone you know is considering Hip or Knee Replacement surgery, you need to watch this video.
Read More

How to Increase Flexibility Without Stretching

Sometimes no amount of stretching and foam rolling will make you more supple. Watch this video to find out muscle testing can identify the hidden reasons behind your lack of...
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A New Approach to Neck and Back Pain

Muscle inhibition leaves muscles unable to respond to the stresses and strains of living. Muscle testing can identify the inhibition and what to do about it. Here, Simon King shows...
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Find out whether you have osteoarthritis (wear and tear) or inflammatory arthritis. Links to your best treatment options in Berkhamsted.
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Learn About Afferent Input

 Simon King specialises in Afferent Input. Every nerve message that controls your movement and you thoughts has to start from somewhere. So do you know what produces nerve messages? Hint...
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Is Metal Part of the Problem?

Ever wondered why you’re feeling weak and out of whack? Here are the top five most surprising causes of muscle weakness and pain. With a painless examination, an Afferent Input...
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Could it be Dentistry?

For over 30 years, Simon King, our musculoskeletal health specialist, has been working out what really causes people to be ill and injured. Not just how to treat them but...
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