All you have to do is line up to "try" a massage chair because you might "buy" it.
The best massage chairs have helmets.
In one sense, massage chairs are a type of robot (fulfilling a traditionally human profession). Japan invests more in robot research than any other country.
Japanese massage chairs are incredibly advanced. It's like a real massage.
Remote controls are in Japanese and have dozens of cryptic buttons.
It's best to find a sales person or friend to explain the chair to you.
Whatever you do — never buy a massage chair. You'll never leave the house again.