I hope this link works. Some of you may find this helpful?

http://www.stringsmagazine.com/article/140...lMusician-1.asp

Tess

Thanks Tess, it was helpful. I do tend to slouch when I play the cello.

Very useful website, thanks. I have a friend who swears by the Alexander technique - said it really improved his playing via improving his posture. Haven't tried it myself, but I guess the better aligned you are the free-er you will be to move effectively and the less you will be prone to injury.