In 1958, Herman Miller's designer Bob Propst could write:
Compelled by lack of choice, we are forced to conduct most office activity in a sitting position. The result, as medical studies and insurance data make clear, is a steady decline in vitality, energy, and general body tone. Man's physical machine has evolved to do many things well but no single thing continuously.
He and George Nelson introduced standing desks in their Action Office, but they never caught on. In fact, the whole idea of action went away, as we settled into our Aerons.