Probably the most important video link I'll ever post.

Playing the piano is all about practice and persistence, the ideal recipe for injuries. That is why a well thought over position has to become a natural thing to you. This prevents severe injuries (cfr. Carpal tunnel syndrome).
If you don't pay attention to it, you might get yourself into this one:



Doesn't seem very appealing to me. So before you start, think about this one!


Play the Piano - Hand and Body Position



By monkeysee: http://www.monkeysee.com/play/1722-play-the-piano-hand-and-body-position