五、朝暮叩齿三百六,七老八十牙不落叩齿,就是指用上下牙有节奏地反复相互叩击的一种自我保健法。民间俗称“叩天钟”。清朝人尤乘的《寿世青编》说“齿为筋骨之余,宜常叩击,使筋骨活动,心神清爽……”。中医经典《类经》说“肾主骨,齿者骨之余也”。《素问·上古天真论》说“肾生骨髓,肾气实,齿更发长”。也就是说:人体骨骼体质有 Fifth, toward the twilight knocking three hundred sixty, seventy-eighty teeth do not fall knocking, refers to the use of upper and lower teeth rhythmically repeated mutual tapping a self-care method. Folk commonly known as “knocking bell”. The Qing Dynasty especially by the “life of the Green” said “teeth for the bones aside, should often percussion, bones activity, mind refreshing ... ”. Classic classics “classics,” said “the main kidney of the kidney, while those who have teeth”. “Su asked ancient naive theory,” said “kidney kidney bone marrow, kidney gas real, longer teeth”. In other words: human skeletal constitution