Sich krank essen, trinken, sitzen: to become sick by eating, drinking, sitting too much. – A Complete Practical Grammar of the German Language (c.1805–1828) by Charl

Still, it is customary to keep pupils sitting too long at once. They ought to stand occasionally, or march around the room; and they should be required to exercise a few minutes in the open air, once an hour, at least. – American Annals of Education and Instruction, April 1832

I shall be compelled to buy a standing-desk, which will cost me from two to three dollars, as the older students advise me to have one as necessary to my health. – James Stokes Dickerson, letter to brother, 1842 October 13th

Desidiousness. Lat. sitting too much; slothfulness, idleness, carelessness. – A New Dictionary of the English Language by Charles Richardson, 1836