丹田(指下丹田)在练功过程中占有重要地位,“意守丹田”“气贯丹田”是以丹田为主要目标。古人认为,丹田是气之所在,是胎儿在母体内接受先天之气的部位,呼吸往来百脉皆通,气血通畅而百病皆除”。实践证明,丹田在练功意守过程中确有疏通经络、调和气血的作用,它对练功者来说是一个重要部位,可从大体解剖上看其深处只有肠管、神经、血管等一般性组织,而没有象心、肺、肝、胃等实质性器官。因此,丹田的物质基础是什么?这一向是人们探讨的课题。另外,丹田的具体部位和范围,有人说在脐下一寸三分,有人说脐下一寸五分,有的说脐下三寸,还有的说在脐内一寸三分等,众 Dantian (referring to the next pubic region) occupies an important position in the practice process, “to keep the pubic region,” “Gas through the pubic region” is the pubic region as the main goal. The ancients believe that the pubic region is where the gas is the fetus in the mother’s body to accept the site of innate Qi, respiratory exchanges are all pass, unobstructed blood and all diseases are removed. "Practice has proved that pubic region in the practice of defensive practice does have To clear the meridians, to reconcile the role of qi and blood, it is an important part of the practitioners, from the general anatomy of the depths of the only intestinal, nerve, blood vessels and other general organizations, but not like heart, lung, liver and stomach In addition, the specific parts of the pubic region and range, some people say one inch under the navel, some say one inch under the navel, some say Under the umbilical three inches, and others say one inch in the umbilical third, the public