丹经谓，一气营运，出入身中，一时凡一千一百四十五息，一昼夜计一万三千七百四十息。
出入之息，以踵存于至深渊之中，气行无间，绵绵若存，寂然不动，与道同体。若盛
气哭号扬声，喊诵吹笛。长歌多言伤气，皆非养生之道。故功行呼吸，出入不可不以缓急、度数为要。
心有日月，其说非妄。古仙云∶凡存心中有日象，大如钱，在心中赤色有光芒，从心中上出喉，
至齿间不出，回环胃中，如此良久，临目存见心中，胃中分明，乃吐气，咽液三十九遍。日出时，日中时行
之，一年除疾，五年身有光彩，十八年得道。日中行无影，辟百邪千灾之气。常存日在心，丹在泥
丸中。昼服日，夜服月。服月法，存月光芒白色，从脑中入喉又复至齿而咽入胃。一云常存月，一
月在十五日以前服，十日以后不服。月减光芒损天气，故即止也。
起功时，要调息定气，一志凝神。引功时，要起脚挂指，离地乘空。收功时，要清升浊降，关透脉通。
前九图通关分气。正身图运气还方，惟定身图转运辘轳，搬运河车，采药炼丹，和神养性，出定入定，浑
然太极，升则醍醐灌顶，降则丹穴充盈，散则遍及六合，卷则紧藏个中，行持无间，妙绪莫名。
环拱立身直如松，脚根虎膝莫漏空，两耳垂肩鼻对胸，合眼平视一尺中。
道教经典记载，真气在体内运行，有进有出。一个时辰（两小时）内呼吸一千一百四十五次，一昼夜（二十四小时）共计一万三千七百四十次呼吸。
呼吸之气，仿佛存于脚后跟所连接的极深之处，气行畅通无阻，连绵不断似有似无，寂静不动，与“道”融为一体。如果气息粗重，像哭号、扬声、喊叫、诵念或吹笛那样急促喧闹，或者长时间唱歌、多说话而损伤元气，这些都不是养生的正道。因此，修炼时的呼吸，其出入的缓急和次数是至关重要的。
心脏如同日月，这种说法并非虚妄。古代仙人说：凡是意守心中要有太阳的形象，大小如铜钱，位于心中，呈赤色并有光芒，从心中向上到达喉咙，至牙齿间而不出来，回环经过胃中，这样持续很久，闭目时能清晰地看见心和胃中的景象，然后吐气，吞咽津液三十九次。在日出时、日中时练习此法，一年可除疾病，五年身体会有光彩，十八年可得道。日中行时无影子，可以辟除百邪千灾的气。常将意念停留在心中的太阳，丹药则存于头顶泥丸宫。白天服食日精，夜晚服食月华。服食月华的方法，是意想月光白色光芒，从脑中进入喉咙，再次到达牙齿并吞咽入胃。另一种说法是常存想月亮，但月亮在农历十五日以前服食，十日以后不服食。因为月亮光芒减弱会损耗天气，所以此时就停止服食。
开始练功时，要调节呼吸，安定气息，专一精神，凝聚神志。引导功法时，要提起脚挂住脚趾，仿佛离地腾空。收功时，要使清气上升，浊气下降，关窍通透，经脉通畅。前九幅图演示了通关分气的过程。正身图演示运气回归方正，只有定身图演示转运辘轳，搬运河车，采药炼丹，调和神性，修养本性，出定入定，浑然一体如太极，上升则醍醐灌顶，下降则丹穴充盈，散开则遍及六合，卷起则紧藏其中，修行持守没有间断，妙处难以言表。
双手环拱，立身笔直如松，脚跟、虎口、膝盖不要漏空，两耳垂肩，鼻尖对准胸口，合眼平视前方一尺处。
Daoist classics state that the primordial qi circulates within the body, entering and exiting. In one shichen (two hours), there are 1,145 breaths; in a full day and night (24 hours), there are 13,740 breaths.
The entering and exiting breaths are said to reside at the deepest abyss connected to the heels. The qi moves without obstruction, continuous and faint as if present yet absent, motionless and silent, merging with the Dao. If the breath is heavy, accompanied by crying, shouting, chanting, or blowing like a flute, or if long singing and excessive speech damage the qi, these are not the way of health preservation. Therefore, in practice, the regulation of breathing must prioritize the speed and count of inhalation and exhalation.
The heart is likened to the sun and moon; this assertion is not false. Ancient immortals stated: When focusing on the heart, visualize the image of the sun, the size of a coin, located in the center of the heart, red in color with radiance. Let it rise from the heart to the throat, stop just before the teeth, and circle back through the stomach. Maintain this visualization for a long time until you can clearly see the heart and stomach when closing your eyes. Then exhale and swallow saliva thirty-nine times. Practice this at sunrise and noon. After one year, diseases will be eliminated; after five years, the body will glow; after eighteen years, one may attain the Dao. Walking under the midday sun leaves no shadow, warding off evil influences and disasters. Constantly keep the sun in the heart, and the elixir in the Niwang Palace (the upper Dantian). During the day, ingest the essence of the sun; at night, ingest the essence of the moon. To ingest the moon's essence, visualize white moonlight entering from the brain to the throat, reaching the teeth, and swallowing into the stomach. Another method suggests constantly visualizing the moon, but only practice ingesting it before the fifteenth day of the lunar month, and cease after the tenth day. As the moon's light wanes, it depletes heavenly qi, hence the cessation.
When beginning practice, regulate the breath, stabilize the qi, focus the mind, and concentrate the spirit. When guiding the energy, lift the feet and hook the toes, as if leaving the ground and floating in the air. When concluding practice, ensure clear yang rises and turbid yin descends, opening the gates and unblocking the meridians. The first nine diagrams illustrate the process of opening passages and distributing qi. The Standing Straight Diagram illustrates circulating qi to return to balance. Only the Fixed Body Diagram illustrates turning the Luoluo wheel, transporting the River Chariot, gathering herbs, refining the elixir, harmonizing the spirit, nurturing nature, entering and exiting meditation, becoming one with the Supreme Ultimate (Taiji). Ascending brings the sensation of pouring cream over the head; descending fills the Danxue (elixir cave); scattering reaches all directions; contracting hides tightly within. Continuous practice yields ineffable wonders.
Stand with hands arched, body straight as a pine tree. Do not leave gaps at the heels, Tiger's Mouth (Hegu area), or knees. Ears hang toward the shoulders, nose aligns with the chest. Close the eyes and gaze levelly at a point one chi ahead.