Not webmasters only, but anyone who works daily in front of computer. Some of you might not know about Carpal Tunnel Syndrome, it's some kind of a common source of hand numbness and pain. You can see some of
CTS surgery pictures, hope you still good after seeing those.
And it's a big risk for anyone who works daily on a computer that use mouse and computer on bad position. Here are some good postions on mouse and keyboard usage for you:
and more on this
post, also some
hand exercise while on computer
Hope this information help us on healthy workspace! And hope I'm not posting this on wrong section