真人曰∶虽常服药物而不知养性之术，亦难以长生也。养性之道，不欲饱食便卧，及终日久坐，皆
损寿也。人欲小劳。
但莫至疲，及强所不能堪胜耳。人食毕，当行步踌躇，有所修为，为快也。故流水不腐，户枢不朽蠹，
以其劳动数故也。故人不要夜食，食毕但当行中庭，如数里可佳。饱食即卧，生百病，不消成积聚也。
食欲少而数，不欲顿多难销。常如饱中饥，饥中饱。故养性者，先饥乃食，先渴而饮。恐觉饥乃
食，食必多；盛渴乃饮，饮必过。食毕当行，行毕使人以粉摩腹数百过，大益也。青牛道士言∶
食不欲过饱，故道士先饥而食也；饮不欲过多，故道士先渴而饮也。食毕行数百步，中益也。暮食毕，
行五里许乃卧，令人除病。凡食，先欲得食热食，次食温暖食，次冷食。食热暖食讫，如无冷
食者，即吃冷水一两咽，甚妙，若能恒记，即是养性之要法也。凡食，欲得先微吸取气，咽一两咽，
乃食，主无病。真人言∶热食伤骨，冷食减脏，热物灼唇，冷物痛齿。食讫踟蹰，长生；饱食，勿
大语。大饮则血脉闭，大醉则神散。春宜食辛，夏宜食酸，秋宜食苦，冬宜食咸，此皆助五脏、益
血气，辟诸病。食酸咸甜苦，即不得过分食。春不食肝，夏不食心，秋不食肺，冬不食肾，四季不
食脾。如能不食此五脏，尤顺天理。燕不可食，入水为蛟蛇所吞，亦不宜杀之。饱食讫即卧，成病
背疼。饮酒不欲多，多即吐，吐不佳。醉卧不可当风，亦不可用扇，皆损人。白蜜勿合李子同食，
伤五内。醉不可强食，令人发痈疽、生疮。醉饱交接，小者令人面 咳嗽；不幸伤绝脏脉，损命。
凡食欲得恒温暖，宜入易销，胜于习冷。凡食皆熟胜于生，少胜于多。饱食走马，成心痴。饮水
勿忽咽之，成气病及水癖。人食酪，勿食酢，变为血痰及尿血。食热食，汗出勿洗面，令人失颜色，
面如虫行。食热食讫，勿以醋浆漱口，令人口臭及血齿。马汗息及马毛入食中，亦能
害人。鸡、兔、犬肉不可合食。烂茅屋上水滴浸诸脯，名曰郁脯，食之损人。久饥不得饱食，饱食成癖
病。饱食夜卧失覆，多霍乱死。时病新瘥，勿食生鱼，成痢不止。食生鱼，勿食乳酪，变成虫。食兔肉，
勿食干姜，成霍乱。人食肉不用取上头最肥者，必众人先目之，食者变成结气及疰疠，食皆然。空腹勿
食生果，令人膈上热，骨蒸作痈 。铜器盖食，汗出落食中，食之发疮肉疽。触寒未解，食热食，亦
作剌风。饮酒热未解，勿以冷水洗面，令人面发疮。饱食勿沐发，沐发令人作头风。荞麦和猪肉食，不
过三顿，成热风。干脯勿置秫米瓮中，食之闭气。干脯火烧不动，出火始动，擘之筋缕相交者，食之
患人或杀人。羊胛中有肉如珠子者，名羊悬筋，食之患癫痫诸湿。食不见形影者，食之成疰、腹胀。
暴疾后不周饮酒，膈上变热。新病瘥，不用食生枣、羊肉、生菜，损颜色，终身不复，多致死，膈上
热蒸。凡食热脂饼物，不用饮冷醋浆水，善失声苦咽。生葱白合蜜食，害人，切忌。干脯得水自动，杀
人。曝肉作脯，不肯燥，勿食。羊肝勿合椒食，伤人心。胡 合羊肉食之，发热。多酒食肉，名曰痴脂。
忧狂无恒，食良药五谷充悦者，名曰中士。犹虑疾苦，食气保精存神，名曰上士，与天同年。
The True Man said: Although one frequently takes medicinal substances, if one does not understand the art of nurturing nature (Yangxing), it is also difficult to achieve longevity. The way of nurturing nature involves avoiding lying down immediately after a full meal, as well as sitting still for the entire day; both practices damage lifespan. Humans should engage in moderate exertion but must not reach exhaustion, nor force oneself to do what one cannot endure. After eating, one should walk slowly and engage in beneficial activities to feel joyful. Thus, flowing water does not rot, and door pivots are not eaten by worms, because they are moved frequently. Therefore, one should not eat at night; after eating, one should walk in the courtyard, and walking several li is preferable. Lying down immediately after a full meal generates various diseases, and undigested food forms accumulations (Ji Ju). Food intake should be small and frequent, not large meals that are hard to digest. One should often maintain a state of being neither fully full nor fully hungry. Thus, those who nurture nature eat before feeling hungry and drink before feeling thirsty. If one waits until hungry to eat, the amount will surely be excessive; if one waits until extremely thirsty to drink, the volume will surely be too much. After eating, one should walk, and after walking, having someone rub the abdomen with powder hundreds of times is highly beneficial. The Green Ox Doctor said: Food should not be consumed to excess, so doctors eat before feeling hungry; drinks should not be consumed in excess, so doctors drink before feeling thirsty. Walking several hundred steps after eating is beneficial. In the evening, after finishing dinner, walking about five li before sleeping helps remove diseases. Regarding all food, one should first consume hot food, then warm food, and finally cold food. After consuming hot and warm food, if there is no cold food available, drinking one or two mouthfuls of cold water is excellent. If one can constantly remember this, it is the key method of nurturing nature. Regarding all food, one should first slightly inhale air, swallow one or two mouthfuls, and then eat, which prevents illness. The True Man said: Hot food damages bones, cold food reduces organ function, hot items burn the lips, and cold items hurt the teeth. Walking slowly after eating promotes longevity; after a full meal, do not speak loudly. Large amounts of alcohol close the blood vessels, and heavy drunkenness scatters the spirit (Shen). Spring is suitable for pungent flavors, summer for sour flavors, autumn for bitter flavors, and winter for salty flavors; these all assist the Zang-Fu organs, benefit Qi and Blood, and ward off various diseases. Consuming sour, salty, sweet, or bitter flavors should not be excessive. In spring, do not eat liver; in summer, do not eat heart; in autumn, do not eat lungs; in winter, do not eat kidneys; in the four seasons, do not eat spleen. Not eating the meat of these five Zang-Fu organs especially conforms to the principles of Heaven. Swallows should not be eaten, as they are swallowed by flood dragons or snakes when entering water, and they should not be killed. Lying down immediately after a full meal causes back pain. Alcohol should not be consumed in excess, as excessive consumption leads to vomiting, which is unfavorable. One lying drunk should not face the wind, nor use a fan, as both harm the body. White honey should not be eaten with plums, as it damages the Five Internal Organs. Forcing food while drunk causes carbuncles and sores. Sexual intercourse while drunk and full may cause facial coughing in mild cases, or damage the visceral meridians and endanger life in severe cases. All food should be consistently warm and easy to digest, which is superior to habitual cold consumption. Cooked food is better than raw food; less food is better than more. Riding a horse on a full stomach causes mental confusion. Drinking water should not be swallowed abruptly, as this causes Qi disorders and water retention syndromes. Eating cheese and then vinegar transforms into bloody phlegm and hematuria. When sweating from hot food, one should not wash the face, as this causes loss of complexion and a sensation of insects crawling on the face. After eating hot food, one should not rinse the mouth with vinegar water, as this causes bad breath and bleeding gums. Horse sweat odor and horse hair entering food can also harm humans. Chicken, rabbit, and dog meats should not be eaten together. Water dripping from a dilapidated thatched roof onto dried meat is called "Yu Fu"; eating it harms the body. Eating to satiety after long starvation causes parasitic diseases. Sleeping uncovered after a full meal at night often leads to death from cholera-like symptoms. After recovering from seasonal illnesses, one should not eat raw fish, as this causes persistent dysentery. Eating raw fish and dairy products simultaneously transforms into parasites. Eating rabbit meat and dry ginger simultaneously causes cholera-like symptoms. When eating meat, avoid the fattiest head parts, which are likely inspected by others first; eating such meat causes Qi stagnation and infectious diseases. Eating raw fruits on an empty stomach causes heat above the diaphragm and bone-steaming carbuncles. Food covered with copper vessels where sweat falls into it causes sores and flesh gangrene. Eating hot food while cold has not dissipated causes piercing wind sensations. After drinking alcohol, if heat remains unresolved, washing the face with cold water causes facial sores. Washing hair after a full meal causes headache disorders. Buckwheat and pork eaten together for more than three meals cause wind-heat. Dried meat stored in a sorghum jar causes Qi obstruction. Dried meat that does not move when burned but moves when removed from fire, with intersecting sinews when torn, causes illness or death if eaten. Meat resembling pearls in sheep shoulder blades is called "Yang Xuan Jin"; eating it causes epilepsy and dampness disorders. Eating things without visible shadows causes infectious diseases and abdominal distension. Drinking alcohol shortly after a sudden acute illness causes heat above the diaphragm. After recovering from a new illness, one should not eat raw dates, mutton, or raw vegetables, as this damages the complexion permanently, often leading to death and heat steaming above the diaphragm. When eating hot fatty pastries, one should not drink cold vinegar water, as this easily causes hoarseness and painful throat conditions. Raw green onion whites and honey eaten together harm humans and must be strictly avoided. Dried meat that moves automatically upon contact with water is lethal. Dried meat that refuses to dry properly should not be eaten. Sheep liver eaten with pepper damages the human heart. Coriander eaten with mutton causes fever. Excessive consumption of alcohol and meat is called "Chi Zhi" (Fatty Gluttony). Those who are anxious and erratic but nourish themselves with good medicines and grains are called "Middle Scholars." Those who worry about illness and preserve essence and spirit through Qi cultivation are called "Upper Scholars," who live as long as Heaven.