I would not call it muscle. However, if we if we practice a good session, an impression of tone emerges.
From all evidence, it works well in the hands, wrists, arms, shoulder and back even if you are standing. But not the hair!
It seems a good way to stretch your upper body. A fun excuse for not sitting still, too ...
This model has counter. That said, the effect is the same as other models.
I do not miss an opportunity to turn the ba-ball.
I think adopt another.
like, this, I go ...
Silence, it turns!
