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

Simon King

Fascinated by muscle testing and the connections between nerves and muscles, Simon 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.

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 musckuloskeletal 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.


Afferent Input

The Revolution in Healthcare you haven't heard about yet

Your brain is a complex processing centre for nerve messages sent from your body for processing.

The messages that supply your brain are predominantly produced in your muscles and teeth (as well as the other senses of sight, taste, balance, hearing and touch.)

Afferent Input is the clinical study of body output to better understand failures of neural input.

While there is very little anyone can do about the output of your nervous system, there is a lot we can do about the input. Nearly all types of body treatment involve AFFERENT INPUT. Chiropractic, Osteopathy, Acupuncture, Physiotherapy, Exercise, Training all change AFFERENT INPUT. An Afferent Input Practitioner uses these inputs to the greatest effect.

gluteal muscle testing
Here, Simon is testing the gluteal muscles and hamstrings. These are very important for running, walking, sitting and standing.

A Strong Body is a Healthy Body

Muscles are not directly controlled by the brain. Most of our muscle control and response is controlled via musculo-spinal reflexes.

It is easy to interfere with musculo-spinal reflexes.

Imagine jumping off a chair onto the ground. At the moment of impact, certain muscles start to stretch, activating hugely increased firing of the sensors located in those muscles. Those messages are sent to the cord and immediately return to the muscle, increasing its tone, power and strength allowing you to NOT fall on the floor, sprain your ankle or dislocate your knee.

Imagine now you do that same jump but this time you land in bare feet on broken glass. A different reflex (the withdrawal reflex) would prevent your quadriceps from contracting because the withdrawal reflex produces INHIBITION of the quadriceps and FACILITATION of the hamstrings. The withdrawal reflex would normally prevent injury by stopping you from pushing your foot through a nail now CAUSES injury by removing strength from the muscles you need.

It turns out many persistent illnesses and injuries are caused by muscle inhibition caused by faulty AFFERENT Input.

An Afferent Input practitioner looks at the output of the muscles. Where that output is found to be deficient or inhibited, the practitioner can search for a solution which involves either removing the cause of the faulty input or in some cases providing input that is deficient.

neck muscle testing
Checking the strength of the posterior neck muscles. If weak the neck could be prone to pain and injury.

Make An Appointment

Consultation £75

Follow-up Treatments £50

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
Arthritic hips and weak neck solved by removing metal from the mouth


  • 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. –

    It turns out aches and pains aren't normal
  • I’ve been applying your afferent input technique for a couple of months now, and am happily amazed by some of the results!

    Several of my “old” patients are now a lot better because of a nervous system irritant that was still hindering them. My favorite case is still a 16 year old girl with a two year history of headaches, dizzyness and a once-a-month attack of epilepsia. After taking out her belly button piercing and 5 adjustments she hasn’t had a headache, hasn’t been dizzy nor had epilepsia. Super! As a result, now I am treating her mother and father as well.

    Health Professionals love it
    Annette Burke - Chiropractor, Holland.
  • 13 years ago, I had a car accident where I apparently suffered whiplash. As a result, I suffered acute back problems, culminating in me slipping two discs when I fell down the stairs. I spent thousands of pounds on reflexology, Chinese homeopathy… I just wanted to find something that worked! My local chiropractor thought it might be linked to my crown (the same year as my accident, I’d had a metal crown put in) and put me in touch with Simon.

    I can remember my husband saying at the time what have you been told now! So we both went and visited Simon in Berkhamsted, and Simon asked me to do the dumbbell test, where he asked me to lift a dumbbell with my left and then my right hand. My right hand just wouldn’t move until he told me to cover my crown, and then yes, I could move it! On Simon’s advice, I had the crown removed and replaced with a non-metal version. I can honestly say that my back has improved ten-fold, instantly my strength came back… I’m no longer on tablets every day and I’m not crying every day.

    I'm not Crying Every Day
    Karen, Stockport