Health Jolting Chair

Oliver Halsted was granted a patent for an "exercising machine" in 1844. It was later marketed as the Health Jolting Chair. AKA the "wake-up chair." By pulling the levers on the side, it would bounce up and down. It was said to be a panacea for "dyspepsia, liver complaint, low spirits, general debility, constipation, 'so-called malaria,' jaundice, melancholia, and anemia."

Image source: Natl Lib of Medicine