肾荣于阴器，肾气虚，不能制津液，则汗湿，虚则为风邪所乘，邪客腠理，而正气不泄
，邪正相干，在于皮肤，故痒。搔之则生疮。
风虚者，百 之长。劳伤之人，血气虚弱，其肤腠虚疏，风邪易侵。或游易皮肤，
或沉滞脏腑，随其所感，而众病生焉。其汤熨针石，别有正方，补养宣导，今附于后。
《养生方·导引法》云∶屈一足，指向地努之，使急，一手倒挽足解溪，向心极势，腰
、足解溪、头如似骨解、气散，一手向后拓席，一时尽势三七。左右换手亦然。去手足腰
膊风热急闷。
又云∶抑头却背，一时极势，手向下至膝头，直腰，面身正。还上，来去三七。始正身
，纵手向下，左右动腰二七，上下挽背脊七。渐去背脊、臂膊、腰冷不和。头向下努，
手长舒向背上高举，手向上，共头，渐渐五寸，一时极势，手还收向心前、向背后，去来和
谐，气共力调，不欲气强于力，不欲力强于气，二七。去胸背前后筋脉不和、气血不调。
又云∶伸左胫，屈右膝内压之，五息止。引肺气，去风虚，令人目明。根据经为之，引肺
中气，去风虚病，令人目明，夜中见色，与昼无异。
肾主腰脚。肾经虚损，风冷乘之，故腰痛也。又，邪客于足太阴之络，令人腰痛引少腹
，不可以仰息。
诊其尺脉沉，主腰背痛。寸口脉弱，腰背痛。尺寸俱浮，直上直下，此为督脉腰强痛。
凡腰痛有五∶一曰少阴，少阴申也，七月万物阳气伤，是以腰痛。二曰风痹，风寒着腰
，是以痛。三曰肾虚，役用伤肾，是以痛。四曰 腰，坠堕伤腰，是以痛。五曰寝卧湿
地，是以痛。其汤熨针石，别有正方，补养宣导，今附于后。
《养生方》云∶饭了勿即卧，久成气病，令腰疼痛。
又曰∶大便勿强努，令人腰疼目涩。
又云∶笑多，即肾转腰痛。
又云∶人汗次，勿企床悬脚，久成血痹，两足重及腰痛。
《养生方·导引法》云∶一手向上极势，手掌四方转回，一手向下努之，合手掌努指，
侧身欹形，转身向似看，手掌向上，心气向下，散适，知气下缘上，始极势，左右上下四七
亦然。去膊井、肋、腰脊痛闷。
又云∶互跪，长伸两手，拓席向前，待腰脊须转，遍身骨解气散，长引腰极势，然始却
跪使急，如似脊内冷气出许，令臂膊痛，痛欲似闷痛，还坐，来去二七。去五脏不和、背痛
闷。
又云∶凡人常觉脊强，不问时节，缩咽膊内，仰面努搏井向上也。头左右两向挪之
，左右三七，一住，待血行气动定，然始更用，初缓后急，不得先急后缓。若无病患，常欲
得旦起、午时、日没三辰如用，辰别三七。除寒热，脊、腰、颈痛。
又云∶长舒两足，足指努向上，两手长舒，手掌相向，手指直舒，仰头努脊，一时极势
，满三通。动足相去一尺，手不移处，手掌向外七通。更动足二尺，手向下拓席，极势，三
通。去遍身内筋脉虚劳，骨髓痛闷。长舒两足，向身角上，两手捉两足指急搦，心不用力，
心气并在足下，手足一时努纵，极势三七。去 、臂、腰疼、解溪蹙气、日日渐损。
又云∶凡学将息人，先须正坐，并膝头足，初坐，先足指指向对，足跟外扒，坐上少欲
安稳，须两足跟向内相对，坐上，足指外扒，觉闷痛，渐渐举身似款便，坐坐上，待共两坐
相似，不痛，始双竖足跟向上，坐上足指并反而向外，每坐常学。去膀胱内冷，面冷风、膝
冷、足疼、上气、腰痛，尽自消适也。
肾的气血荣华表现于阴器。若肾气虚弱，不能固摄津液，则会导致汗出湿漉；正气亏虚时，风邪便会乘虚而入，邪气客居在腠理（皮肤纹理及肌肉间隙），导致正气无法宣发疏泄。邪气与正气相互搏结，停留在皮肤之间，所以产生瘙痒感。搔抓之后就会生疮。
所谓“风虚”，是各种疾病中最为常见的一种。劳损内伤之人，气血虚弱，肌肤腠理疏松空虚，风邪容易侵入。风邪或游走于皮肤之间，或沉滞于脏腑之中，随着人体所感受的不同，从而引发多种疾病。针对这些病症的汤药、熨贴、针刺、砭石等治疗，另有专门的方剂，补益调养和导引宣通的方法，现在附在后面。
《养生方·导引法》中说：弯曲一只脚，脚尖指向地面用力努张，使身体紧张，一只手反向牵拉足踝部的解溪穴，向心方向极力伸展，感觉腰部、足部解溪穴、头部仿佛骨骼解散、气息消散，另一只手向后推按席面，一次性做到极致，重复二十一次（三七二十一）。左右换手操作也是如此。此法可去除手足、腰膊的风热急闷之感。
又说：低头后仰背部，一次性极力伸展，手向下延伸至膝盖，挺直腰身，面部和身体端正。然后起身还原，往返运动二十一次。开始时端正身体，双手向下舒展，左右扭动腰部十四次（二七十四），上下拉伸背脊七次。此法可逐渐缓解背脊、臂膊、腰部的寒冷不适。头向下用力，双手长伸举过头顶至背后高处，手向上，与头部配合，渐渐抬高五寸，一次性极力伸展，手收回至心前、背后，动作来去和谐，气息与力量协调，不使气息强于力量，也不使力量强于气息，重复十四次。此法可去除胸背前后筋脉不和、气血不调之症。
又说：伸直左小腿，弯曲右膝向内按压，保持五个呼吸的时间后停止。此举可引导肺气，去除风虚，使人目光明亮。按照这种方法练习，引导肺中的气，去除风虚病，使人目光明亮，夜间也能看清事物，与白天无异。
肾主管腰部和脚部。肾经虚损，风冷之邪乘虚侵袭，所以导致腰痛。另外，邪气客居于足太阴脾经的络脉，会使人腰痛并牵引少腹，无法仰卧呼吸。
诊察尺脉沉伏，主病为腰背痛。寸口脉弱，主病为腰背痛。尺寸两部脉都浮，且脉象直上直下，这是督脉病变导致的腰强痛。
大凡腰痛有五种类型：一是少阴腰痛，少阴对应申月（农历七月），此时万物阳气受损，因此腰痛。二是风痹腰痛，风寒之邪附着于腰部，因此疼痛。三是肾虚腰痛，因过度役使损伤肾脏，因此疼痛。四是坠腰腰痛，因坠落跌打损伤腰部，因此疼痛。五是寝卧湿地腰痛，因睡卧在潮湿之地，因此疼痛。其汤药、熨贴、针刺、砭石等治疗，另有专门方剂，补养宣导之法，现附在后面。
《养生方》说：饭后不要立即躺卧，久而久之会形成气病，导致腰部疼痛。
又说：大便时不要强行努挣，这会使人腰痛、眼睛干涩。
又说：人出汗之后，不要坐在床边悬空吊脚，久而久之会形成血痹，导致双脚沉重及腰痛。
《养生方·导引法》说：一只手向上极力伸展，手掌向四方旋转回旋，另一只手向下用力努张，合拢手掌用力伸展手指，侧身倾斜身体，转身回望，手掌向上，心气下沉，气息散适，感知气息下行而上行，达到极致之势，左右上下各做四次（四七二十八）也是如此。此法可去除肩井穴区域、肋部、腰脊的疼痛闷胀感。
又说：互跪姿势，长长地伸出两手，向前推按席面，等待腰脊需要转动时，全身骨骼解散、气息消散，长长地拉伸腰部达到极致之势，然后迅速恢复跪姿使其紧张，仿佛脊内的冷气排出少许，令臂膊疼痛，痛感类似闷痛，然后坐起，往返运动十四次。此法可去除五脏不和、背痛闷胀。
又说：凡人常觉得脊柱僵硬，不论什么季节，都要收缩咽喉，将气运入膊内，仰面用力向上搏击。头向左右两侧扭转，左右各七次，共二十一息，暂停一次，等待血液运行、气息发动稳定后，再继续练习，开始缓慢后来急促，不得先急后缓。如果没有病患，常在早晨起床、中午、日落这三个时辰进行练习，每个时辰分别做二十一次。此法可去除寒热，以及脊、腰、颈部的疼痛。
又说：长长地伸直两脚，脚趾向上用力努张，两手长长地伸展，手掌相对，手指笔直舒展，仰头用力挺脊，一次性极力伸展，满三遍。双脚移动相距一尺，手不移位，手掌向外翻转七遍。再移动双脚相距二尺，手向下推按席面，极力伸展，三遍。此法可去除遍身内外筋脉虚劳、骨髓疼痛闷胀。长长地伸直两脚，向身体角落方向，两手抓住两脚脚趾紧紧捏住，心里不用力，心气都在脚下，手脚同时用力伸展，达到极致之势，重复二十一次。此法可去除髋部、臂部、腰部的疼痛，缓解解溪穴处的憋气感，日渐消除损害。
又说：凡是学习养生调息的人，必须先端正坐姿，双膝并拢，双脚并齐。刚开始坐下时，先让脚趾相对，脚跟向外扒开，坐上后稍微寻求安稳，需将两脚跟向内相对，坐上后，脚趾向外扒开，感到闷痛时，渐渐举起全身似要舒适放松的样子，坐在座位上，等待与两个座位相似的感觉，不再疼痛，才开始双竖足跟向上，坐上后脚趾并拢反而向外，每次坐下都要经常练习。此法可去除膀胱内的寒气，以及面部受风、膝盖寒冷、足疼、上气逆、腰痛等症状，都能自然消除舒适。
The kidney manifests its luster in the external genitalia. When kidney qi is deficient and cannot control body fluids, sweating occurs; due to deficiency, wind pathogens invade, lodging in the couli (the spaces between skin and muscles), preventing the righteous qi from venting. The pathogenic and righteous qi interfere with each other at the skin level, causing itching. Scratching leads to the formation of sores.
"Wind deficiency" refers to a condition where various ailments originate. Individuals suffering from labor injury have weak blood and qi, making their skin and couli loose and sparse, allowing wind pathogens to easily invade. The wind may wander through the skin or stagnate within the zang-fu organs. Depending on what is affected, numerous diseases arise. Treatments involving decoctions, moxibustion/heat therapy, acupuncture, and stone needles have separate specific formulas. Methods for tonification, nourishment, and guidance/exercise are attached below.
The *Regimen Manual · Guidance Method* states: Bend one leg, point the toe towards the ground and exert force to tense the body. With one hand, pull back the Jie Xi (ST41) acupoint of the foot towards the heart as far as possible. Feel as if the waist, the Jie Xi acupoint of the foot, and the head are dissolving like bones, with qi scattering. Push the mat backwards with the other hand. Perform this to the utmost extent once, repeating 21 times (3 x 7). Do the same switching hands. This removes wind-heat and acute stuffiness in the hands, feet, waist, and arms.
It also states: Tilt the head down and arch the back, extending to the utmost extent at once. Reach hands down to the knees, straighten the waist, and keep the face and body upright. Then return to the starting position. Go back and forth 21 times. Initially, stand upright, extend hands downwards, move the waist left and right 14 times (2 x 7), and stretch the spine up and down 7 times. This gradually alleviates coldness and disharmony in the spine, arms, and waist. Press the head down, stretch both hands long upwards behind the head, raising them together with the head gradually by five cun. Extend to the utmost extent at once, then retract hands to the front of the heart and behind the back. Movements should be harmonious, with qi and strength balanced; do not let qi overpower strength, nor strength overpower qi. Repeat 14 times. This removes disharmony of meridians and vessels in the chest and back, and imbalance of blood and qi.
It also states: Extend the left shin, bend the right knee and press inward. Hold for five breaths, then stop. This guides lung qi, removes wind deficiency, and clarifies vision. Practicing according to the classics, guiding the qi in the lungs, removes wind deficiency diseases, clarifies vision, and allows one to see clearly at night just as during the day.
The kidneys govern the waist and legs. If the kidney meridian is deficient and damaged, wind-cold invades, causing lower back pain. Additionally, if pathogens lodge in the collateral of the Foot-Taiyin Spleen Meridian, it causes lower back pain radiating to the lower abdomen, making it impossible to breathe while lying flat.
Palpating the Chi pulse (radial artery distal part) being deep indicates lower back and abdominal pain. A weak Cun Kou pulse (radial artery proximal part) indicates lower back and abdominal pain. If both Chi and Cun pulses are floating and move straight up and straight down, this indicates stiffness and pain in the waist due to disease of the Du Mai (Governing Vessel).
Generally, there are five types of lower back pain: First, Shaoyin lower back pain. Shaoyin corresponds to the month of Shen (lunar July); when yang qi of all things is injured, lower back pain occurs. Second, Wind-Bi lower back pain. Wind-cold adheres to the waist, causing pain. Third, Kidney-deficiency lower back pain. Overexertion injures the kidneys, causing pain. Fourth, Traumatic lower back pain. Falling or dropping injuries damage the waist, causing pain. Fifth, Dampness lower back pain. Sleeping on wet ground causes pain. Treatments involving decoctions, heat therapy, acupuncture, and stone needles have separate specific formulas. Methods for tonification, nourishment, and guidance/exercise are attached below.
The *Regimen Manual* says: Do not lie down immediately after eating; over time, this forms qi disorders, leading to lower back pain.
It also says: Do not strain excessively during defecation; this causes lower back pain and dry eyes.
It also says: Laughing too much causes the kidney to shift, leading to lower back pain.
It also says: After sweating, do not sit on the edge of the bed with legs dangling; over time, this forms Blood Bi, resulting in heavy legs and lower back pain.
The *Regimen Manual · Guidance Method* states: Extend one hand upward to the utmost extent, rotating the palm in four directions. Exert force downward with the other hand. Press palms together and extend fingers. Lean sideways, turn the body as if looking back, palm facing up, sink the mind's qi, and scatter comfortably. Perceive qi descending and ascending. Reach the utmost extent. Do the same left-right and up-down four times (4 x 7 = 28). This removes pain and stuffiness in the Jing Well points of the arms, ribs, and spinal column.
It also states: In a kneeling position, extend both hands long, pushing forward against the mat. Wait until the waist and spine need to turn, allowing the whole body's bones to dissolve and qi to scatter. Stretch the waist to the utmost extent, then quickly return to kneeling to create tension, as if expelling cold qi from inside the spine. Let the arms ache, feeling a dull pain, then sit up. Go back and forth 14 times. This removes disharmony of the five zang organs and back pain/stuffiness.
It also states: Whenever one feels spinal stiffness, regardless of the season, contract the throat, direct qi into the arms, look up, and exert force upward. Twist the head left and right, 21 times total (3 sets of 7). Pause once, wait for blood flow and qi movement to stabilize, then resume. Start slow, then become urgent; do not start urgent then slow. If healthy, practice at three times: morning rising, noon, and sunset. Each time, perform 21 repetitions. This removes chills and fever, and pain in the spine, waist, and neck.
It also states: Extend both legs long, pressing toes upward. Extend both hands long, palms facing each other, fingers straight. Look up and thrust the spine. Extend to the utmost extent at once, completing three cycles. Move feet apart by one chi, keeping hands in place, turning palms outward seven times. Move feet apart by two chi, pushing hands down against the mat to the utmost extent, three times. This removes deficiency-labor of internal and external meridians/vessels throughout the body, and bone marrow pain/stuffiness. Extend both legs toward the corner of the body. Grasp both big toes tightly with both hands. Do not use mental effort; let mind's qi reside in the feet. Simultaneously exert and relax hands and feet to the utmost extent, 21 times. This removes pain in the hips, arms, and waist, relieves constrained qi at Jie Xi, and gradually reduces damage.
It also states: Anyone learning health preservation must first sit upright, knees together, feet aligned. Upon sitting, initially point toes toward each other, heels outward. Sit seeking stability, then bring heels inward relative to each other. Upon sitting, point toes outward. If feeling stuffy/painful, gradually lift the body as if relaxing. Sit until the sensation resembles two seats, no longer painful. Then raise heels vertically. Upon sitting, align toes and turn them outward. Practice this every time you sit. This removes cold in the Bladder, wind-cold on the face, cold knees, foot pain, rebellious qi, and lower back pain, eliminating all discomfort naturally.