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

Sitting kills, moving heals. – Joan Vernikos, c.2011

After they had dined, Mrs. Teachum told them she thought it proper that they should use some exercise in the cooler part of the day, lest, by sitting too much, they should injure their health. – Sarah Fielding (1710–1768), “The Governess, or The Little Female Academy,”

[T]hey marched and counter-marched, clapped their hands, stamped hard upon the floor, and performed various evolutions for the purpose of circulating the blood, which by sitting too long is apt to stagnate, and render them, particularly in this climate, dull and sleepy. – Joseph Holt Ingraham, South-West, 1835 [Originally published anonymously, “By a