[4] Chair massage focuses on the head, neck, shoulders, back, arms and hands.
The first electric massage chair was invented in Japan before World War II.
There are many different types and brands, including office-style chairs that operate from internal batteries.
A less expensive option is a separate massaging pad that may be used with an existing chair.
Robotic massage chairs were first brought to market in 1954 by the Family Fujiryoki company.