Side Chair

Side-tilting/rocking, weight-shifting chair?
Hi,
I was told by someone the best type of chair to get was a recliner that could tilt from side-to-side.
The explanation of this was that it would mimic the way a person naturall shifts their weight from side-to-side when standing. i.e. when a person adjusts their body so more body weight is put over one of their hips, so that one leg has more weight on it and the other has less weight to bear.
I have been searhing for such a chair on the internet. Does anyone know of any? Where can I buy them?
Cheers.
try asking at furniture stores.