A robotic massage chair is a chair that contains internal electronic motors and gears designed to massage the person sitting in them. Most robotic massage chairs have some form of controller to vary the type, location, or intensity of massage. The first electric massage chair was invented in Japan before World War II.
Temperatures at Everest Summit and Base Camp The coldest temperatures of the year occur from the 15th of December onward until the end of January with temperatures at the summit averaging -37C (-35F) while those at Everest Basecamp average -17C (1.4F).
But Mount Everest is so high that the top actually penetrates into the stratosphere, where winds known as Jet Streams can flow up to 200 mph, driving temperatures down to minus 73 degrees Celsius. Any exposed skin at high altitudes, even at the best of conditions, are prone to frost bite.