书云∶频沐者气壅于脑，滞于中，令形瘦体重，久而经络不通畅。
常以朔日沐，晦日浴，则吉。沐浴不可同日。饱食沐发，冷水洗头，饮水沐头，热泔洗头，
冷水濯足，皆损人。新沐发勿令当风萦髻，勿湿头卧，令人头风眩闷，及生白屑，发秃面黑，齿痛耳聋。
女人月事来，不可洗头。或因感疾，终不可治。
沐浴渍水而卧，积气在小腹与阴，成肾痹。
炊汤经宿，洗体成癣，洗面无光，作甑哇疮。
频浴者血凝而气散，体虽泽而气自损。故有痈疽之疾者，气不胜血，神不胜形也。
时病新愈，冷水洗浴，损心胞。自汗入水，即成骨痹。
昔有名医将入蜀，见负薪者猛汗河浴。医曰∶此人必死。随而救之。其人入店中取大蒜细切
面浇之。食之汗出如雨。医曰∶贫下人且知药，况于富贵者乎？遂不入蜀。
书云∶盛暑冲热，冷水洗手，尚令五脏干枯，况沐浴乎？远行触热，逢河勿洗面，生乌 。
《闲览》云∶目疾且忌浴，令人目盲。
白彦良壮岁常患赤目。道人曰∶能不浴头，则不病此。彦良记之，七十余更无眼疾。
真人曰∶栉发去风明目，不死之道也。又曰∶头发梳百度，不可轻以沐。
陶隐居云∶饱则沐浴饥则梳，梳多浴少益心目。故道家晨梳常一百二十为数，沐浴或月一度而已。
真人曰∶发宜多栉，手宜在面。齿宜数叩，津宜常咽，气以精炼。此五者，所谓子欲不朽修昆仑耳。
安乐诗云∶发是血之余，一日一次梳。通血脉，散风湿。
《琐碎录》云∶乱发藏卧房壁中久，招不祥。
书云∶发落饮食中，食之成瘕。宋明帝宫人腰痛引心，发则气绝。徐文伯曰∶发瘕也。以油
灌之，吐物长二尺，头已成蛇。悬柱上，水沥尽，唯余发。唐甄立言为太常时，有人病心腹烦满，
弥瘴。诊曰∶误食发而然。令饵雄黄，吐一蛇如拇指，无目，烧之有发气。若头尾全，食人心死。
古籍记载：频繁洗头会导致气机壅滞于脑部，停滞于中焦，使人形体消瘦而身体沉重，久而久之经络不通畅。
通常在农历每月初一洗头，月末洗澡，则吉利。洗头与洗澡不可在同一天进行。饱食后洗头，用冷水洗头部，饮水时冲洗头部，用温热的淘米水（泔水）洗头，用冷水洗脚，都损害人体健康。刚洗完头不要迎风盘发，不要让湿着头发睡觉，否则会导致头风、眩晕闷乱，以及产生头皮屑、脱发、面色黧黑、牙齿疼痛、耳聋等症状。
女性月经来潮期间，不可洗头。如果因此感受病邪致病，最终难以治愈。
沐浴后浸泡在水中躺卧，积气停留于小腹和阴部，形成肾痹。
炊煮过的汤水过夜后再用来洗浴身体，会患上癣疾；洗脸会使面容无光泽；引发类似蒸笼内产生的疮疡（甑哇疮）。
频繁洗澡会导致血液凝滞而气机散失，虽然体表润泽但元气自损。所以患有痈疽疾病的人，是因为气不能胜血，神不能胜形所致。
时令病刚刚痊愈，用冷水洗浴，会损伤心包络。出汗时进入水中，立即形成骨痹。
从前有位名医准备入蜀地，看见一个背柴的人在河中猛汗时洗澡。医生说：“这个人必定会死。”随即上前救治。那人进入旅店取大蒜切碎，用面条浇淋后食用。吃完后大汗如雨。医生说：“贫苦百姓尚且知道用药的道理，何况富贵之人呢？”于是决定不入蜀地。
古籍记载：盛夏酷暑顶着热气，用冷水洗手，尚且会让五脏干枯，更何况是全身沐浴呢？远行途中触受热邪，遇到河流不要洗脸，否则会生出乌髭（或指黑发变白/脱发等症，此处原文“生乌”可能有缺字或通假，依文意译为负面后果）。
《闲览》记载：眼睛有疾病时忌讳洗澡，否则会令人失明。
白彦良壮年时常患红眼病。一位道士说：“如果不洗头部，就不会得这种病。”白彦良记住了这句话，七十多岁再也没有眼疾。
真人说：梳头可以祛风明目，是不死之道。又说：头发每天梳理百遍，不可轻易洗头。
陶隐居说：饱食后沐浴，饥饿时梳头，多梳少浴有益于目和心。所以道家早晨梳头常以一百二十下为定数，沐浴或许一个月才进行一次。
真人说：头发宜多梳理，手宜按摩面部。牙齿宜多次叩击，津液宜经常吞咽，气息宜经过精炼。这五点，所谓想要不朽就要修养昆仑（指头部/头顶）。
安乐诗云：头发是血的余气，一天梳理一次。可以疏通血脉，散发风湿。
《琐碎录》记载：乱发藏在卧室墙壁中很久，会招致不祥。
古籍记载：头发掉落在饮食中，吃下去会形成瘕积。宋明帝的宫人腰痛牵引至心部，头发脱落则气绝。徐文伯说：“这是发瘕。”用油灌服，吐出长二尺的物体，头部已变成蛇的形状。悬挂在柱子上，水分沥尽，只剩下头发。唐甄立言担任太常时，有人患心腹烦满，弥漫如瘴气。诊察后说：“是误食头发所致。”令其服用雄黄，吐出一条拇指粗的蛇，没有眼睛，烧后有头发的焦味。如果蛇的头尾完整，吃人心就会死亡。
According to ancient texts: Frequent hair washing causes Qi stagnation in the brain and obstruction in the middle Jiao (middle energizer), leading to a thin body but heavy weight, and eventually unsmooth meridians and collaterals.
It is auspicious to wash hair on the first day of the lunar month and bathe on the last day. Hair washing and bathing should not be done on the same day. Washing hair after a full meal, washing the head with cold water, rinsing the head while drinking, washing the head with warm rice water (gan water), and washing feet with cold water are all harmful to the human body. After freshly washing hair, do not let the wind blow directly on the coiled hair, and do not sleep with wet hair; otherwise, it may cause Head Wind (tou feng), dizziness, and stuffiness, as well as scalp flakes, hair loss, dark complexion, toothache, and deafness.
Women should not wash their heads during menstruation. If illness is contracted due to this, it may ultimately be incurable.
Lying down while soaking in bathwater accumulates Qi in the lower abdomen and yin region, forming Kidney Bi (Kidney Obstruction Syndrome).
Using boiled water that has been left overnight to wash the body can lead to tinea (xuan); washing the face without care results in a dull complexion and causes Zengwa Chuang (crust-like sores resembling those formed in a steamer).
Frequent bathing causes blood to coagulate and Qi to scatter; although the body appears moist, the vital energy is damaged. Therefore, patients suffering from carbuncles and ulcers have an inability of Qi to overcome Blood, and Spirit to overcome Form.
When a seasonal disease has just resolved, bathing with cold water damages the Pericardium (Xin Bao). Entering water while sweating immediately leads to Bone Bi (Bone Obstruction Syndrome).
In the past, a renowned physician was preparing to enter Shu when he saw a woodcutter bathing in a river while sweating profusely. The physician said, "This person will surely die." He intervened to save him. The man went into an inn, took garlic, chopped it finely, mixed it with noodles, and ate it. After eating, he sweated heavily like rain. The physician said, "Even poor people know the use of medicine, let alone the wealthy." Thus, he decided not to enter Shu.
Ancient texts state: In intense summer heat, washing hands with cold water can still cause the five Zang organs to dry up, how much more so for full-body bathing? When traveling far and exposed to heat, do not wash your face by rivers, or you may develop [condition implied by 'Sheng Wu', possibly referring to premature graying or hair loss].
The book *Xian Lan* states: Those with eye diseases must avoid bathing, as it can lead to blindness.
Bai Yanliang suffered from red eyes frequently in his prime. A Daoist priest said, "If you do not wash your head, you will not suffer from this illness." Bai Yanliang remembered this advice and had no eye diseases after the age of seventy.
The True Man said: Combing hair dispels wind and brightens the eyes; it is a way to avoid death. It is also said: Comb the hair one hundred times daily; do not wash it lightly.
Tao Hongjing stated: Bathe when full, comb when hungry; more combing and less bathing benefits the eyes and heart. Therefore, Daoists often comb their hair one hundred and twenty times in the morning, and bathe only once a month or so.
The True Man said: Hair should be combed frequently, and hands should massage the face. Teeth should be tapped repeatedly, saliva should be swallowed constantly, and Qi should be refined. These five practices constitute the method of cultivating Kunlun (referring to the head/top) for immortality.
The poem *An Le* says: Hair is the surplus of Blood; comb it once a day. This unblocks blood vessels and disperses wind-dampness.
The book *Suo Sui Lu* states: Storing loose hair in bedroom walls for a long time attracts misfortune.
Ancient texts record: If hair falls into food and is consumed, it forms a Jia mass (abdominal lump). An imperial concubine of Emperor Ming of Song suffered from lower back pain radiating to the heart, and her hair fell out causing Qi collapse. Xu Wenbo diagnosed it as "Hair Jia" (Fa Xia). By administering oil, she vomited a two-foot-long object whose head had taken the shape of a snake. Hung on a pillar until the water drained, only hair remained. When Tang Zhen Liyan served as Taichang, a patient suffered from mental restlessness and abdominal fullness, feeling like miasma. Upon diagnosis, he said, "This is caused by accidentally ingesting hair." He prescribed Realgar (Xiong Huang), and the patient vomited a thumb-sized snake without eyes, which emitted a burning hair odor when incinerated. If the snake's head and tail were intact, consuming the human heart would cause death.