Kak legkim dvizheniem pal'tsev prokachat' svoi mozg. Unikal'naia iaponskaia metodika trenirovki myshleniia, pamiati, vnimaniia i logiki, pozvoliaiushchaia predotvratit' starenie mozga - Khasegava Esiia

The book discusses in detail the so-called "finger technique" that has become a real sensation in modern Japan. Your fingers - in particular, thumbs - turn out to be something like another brain, but it has long been noticed that fine motor skills contributes to the sharpness of the mind up to the old age. But how to use our fingers correctly?