Here is a link
http://www.alexandertechnique.com/I can't vouch for it I just looked up on Google.
Basically its about how you use your body in all situations and how that can lead to all sorts of problems no just aches and pains) if you have bad posture etc.
>>To anyone with problems like Evans I would always recommend Alexander Technique.
>>
>>Its sorted me out several times.
>>
>>Nick Mason
>
>Alexander technique?