And this kind of thing basically belongs to the category of fooling. The type of psychological comfort. So far there is no theory to support this device, what is the theoretical basis of their research and development, as a medical device R & D engineers feel very curious!
For example, the massage class, or a little role. But the pulse through the instrument this kind of equipment is pure bullshit! Specializing in cheating big moms!
To be healthy or exercise!