I think of it almost like like a yoga instrument because it makes you so aware of every little crazy thing your body is doing, or just aware of what you don't want it to be doing while you're playing; you don't want to have any sudden movements.
Pero definitivamente lo considero casi como... como un instrumento de yoga porque te mantiene alerta de cada pequeña cosa que hace tu cuerpo o de lo que no quieres que haga mientras tocas, ya saben, movimientos repentinos.