I have my Imac raised so that I can stand when using it. Prolonged sitting hurts my back. I do find that I have to move when standing at the computer, shifting my weight frequently to keep from stiffening up. I've even been thinking of getting one of those balance boards designed for the purpose. I think sedentary for too long is the issue whether standing still or sitting still. As we all know the one size fits all prescription doesn't work. At the very least it is not too helpful to tell people that both sitting and standing are bad for your health. We can't all go back to the savannah and spend our days hunting big game.

Jean