No wonder some ancient chess aficionados declared that unless they were in contact with chess, their chi (energy flow) and pulse would become irregular and unsteady, and their brains would atrophy.
難怪某位有棋癖的老祖宗說，五官四肢不接觸適情的棋藝，氣脈就鬱結不得流利，天機就沈滯枯寂不復發揚。