Many people think that the abacus is a child's lesson, but in Japan, it has been useful for people's lives as a calculation tool closely related to their lives. The abacus, which can be said to be the origin of the “brain training” boom, has been reviewed as a learning material that can be used not only by children but also by adults.
Use the abacus to rejuvenate your brain, rejuvenate your brain, and prevent dementia!
Various studies have shown that using an abacus can greatly stimulate the adult brain. Since the abacus uses the prefrontal area of the brain, it has been proven to develop the ability to process things logically. There are great expectations for the prevention and improvement of dementia.