Of course it works. You adopt a non-existent medical title, learn how to wire up a client into the shock box, practice the art of sounding as though you (more or less) know what you're doing - and the money just rolls in. It's fantastic!
Safe and suitable for everyone, apparently. Except for children, women of child-bearing age, old people, and anyone who's ever had a heart condition, or who might develop one when they find out what the treatment's costing them. Quack quack.
BJ