Doctors began treating "hysteria" in women during the 1800s to relieve their pent up (ahem) tension. Medical professionals originally treated their clients though manual massage. Soon, they developed some strange machinery in an attempt to make it easier for everyone. Of course, business-minded folks saw the opportunity to cash in on the craze with their own cleverly marketed contraptions. I'm not sure how any of these would help get a lady "in the mood" for anything but a robot convention, though. 1.) Horse Exercise Machine Oddee Endorsed by the Princess of Wales! 2.) Vibrating Chair Pinterest "You'll realize thoroughly [sic]...