[Flow]

As some say, the best way to sit is to sit like a child, not still. :)

I recently bought a electric adjustable desk from IKEA. (Link to swedish IKEA: http://www.ikea.com/se/sv/catalog/products/S69806883/ ).

I can really recommend it even if you'll seldom actually stand up using it. It allows you to change the height a little every now and then so you can vary the position you have.