凡人在气交之中，呼吸出入皆接天地之气。故风寒暑湿，四时之暴戾，偶一中人，壮者气行自愈，
怯者则留而为病。宜随时加摄，使阴阳中度，是谓先几防于未病。
春风阳气闭藏于冬者，渐发于外，故宜发散以畅阳气。
《内经》曰∶春三月，此谓发陈，天地以生，万物以荣。夜卧早起，广步于庭。被发缓形，以使志
生。生而勿杀，予而勿
夺，赏而勿罚。此春气之应，养生之道也，逆之则伤肝，夏为寒变。故人当二月以来，摘取东引桃
枝并叶各一握，水三碗，煎取两碗，空心服之，即吐却心膈痰饮宿热。春深稍宜和平将息，绵衣晚
脱，不可令背寒，寒即伤肺，鼻塞咳嗽。如觉热即去之，冷则加之、加减俱要早起之时。若于食后日
中，防恐感冒风寒。春不可衣薄，令人伤寒霍乱，消渴头痛。春冻未泮，衣欲下浓而上薄。
夏三月，人身阳气发外，伏阴在内，是精神疏泄之时，特忌下利以泄阴气。《内经》曰∶夏三月
，此谓蕃秀，天地气交，万物华实。夜卧早起，无厌于日，使志无怒，使英华成实，使气得泄，若爱
在外，此夏气之应，养长之道也。逆之则伤心，秋为 疟。故人常宜宴居静坐，节减饮食嗜欲，调和
心志。此时心旺肾衰，精化为水，至秋乃凝，尤须保啬以固阴气。常宜食热物，使腹温暖，如爪果、生
冷、冰水、冷淘、豆粉、蜂蜜，尤不可食，食多秋时必患疟痢，勿以冷水沐浴并浴面及背，使人得虚热
目病，筋脉厥逆，霍乱阴黄等疾。勿当风卧，勿眠中令人扇，汗出毫孔开，风邪易入，犯之患风痹不仁
，手足不遂，言语蹇涩。年壮或不即病，已种病矣。气衰者，未有不桴鼓相应者。酒后尤当禁之。
秋三月，阳气当敛，不宜吐及发汗，犯之令人脏腑消烁。《内经》曰∶秋三月，此谓容平，天气
以急，地气以明，早卧早起，与鸡俱兴，使志安宁，以缓秋形。收敛神气，使秋气平，无外其志，使肺
气清。此秋气之应，养收之道也，逆之则伤肺，冬为飧泄。若知夏时多食瓜果凉物，宜
以童便二碗，大腹槟榔五枚，细切水煎八分，生姜汁一分，和雪水三分，作两空早服。泻两三行，一夏
所食冷物及膀胱宿水，悉为驱逐，不能为患。虽老年者亦宜服。如小心加慎饮食者，可不必也。泻后以
薤白粥同羊肾空心服之，胜如补剂。
冬三月，天地闭，气血藏，伏阳在内，心膈多热，切忌发汗以泄阳气。《内经》曰∶冬三月，谓之
闭藏，水冰地坼，无扰乎阳。早卧晚起，必待日光，使志若伏若匿，若有私意，若己有得。去寒就温，无
泄皮肤，使气亟夺。此冬气之应，养藏之道也，逆之则伤肾，春为痿厥。故人当服浸酒药以迎阳气，虽
然亦不可过暖，绵衣当晚着，使渐渐加浓，即大冷不宜向火烘炙，恐损目，且手足心能引火入内，令人心
脏燥，血液耗。衣服亦不太炙，冬月天寒，阳气内藏，若加以炙衣重裘，向火醉酒，则阳太甚矣，如遇春
寒，闭塞之久，不与发散，至春夏之交，阴气既入，不能摄运阳气，致有时行热症，甚而谵妄狂越，皆由
冬月不善保阴之故。务宜自爱，寒热适中，此为至要，乃摄生之大法也。
凡人在天地之气交汇的环境中，呼吸吐纳都与天地之气相通。因此，风寒暑湿这四时中暴烈的气候，偶尔侵袭人体，体质强壮的人气机运行通畅即可自愈，体质虚弱的人邪气就会停留而致病。应当根据时节加以调养，使阴阳保持平衡适度，这叫做在疾病发生之前进行预防。
春风中的阳气，是在冬季闭藏于体内的，此时逐渐发散到体外，因此适宜用发散的方法以疏通阳气。
《黄帝内经》说：春季三个月，称为“发陈”，天地生机勃发，万物繁荣。晚上早睡，早上早起，在庭院中广泛散步。披散头发，舒缓形体，以使意志生发。要顺应生长之气而不杀戮，给予而不剥夺，奖赏而不惩罚。这是顺应春气的做法，是养生的原则，违背它则会损伤肝脏，到了夏天会发生寒性病变。所以人从二月开始，采摘向东生长的桃枝和叶子各一把，用水三碗，煎煮取两碗药液，空腹服用，可以吐出心膈间的痰饮和积热。春意深浓时稍宜平和调养，棉衣晚脱，不要让背部受寒，受寒就会伤肺，导致鼻塞咳嗽。如果觉得热就减去衣物，觉得冷就加上衣物，增减都要在早起时进行。如果在饭后或中午时分，恐怕会感冒风寒。春天不可穿得太薄，否则令人患伤寒、霍乱、消渴、头痛等病。春冻未融化时，穿衣要下身厚实上身轻薄。
夏季三个月，人身体的阳气发散于外，阴气潜伏在内，这是精神疏泄的时候，特别忌讳腹泻以耗泄阴气。《黄帝内经》说：夏季三个月，称为“蕃秀”，天地之气相交，万物开花结果。晚上早睡，早上早起，不厌恶日光，使意志没有怒气，使英华成熟结实，使气机得以宣泄，好像喜爱在外一样，这是顺应夏气的做法，是养长的原则。违背它则会损伤心脏，到了秋天会发生疟疾。所以人平时宜闲居静坐，节制饮食和欲望，调和心志。此时心气旺盛肾气衰弱，精气化为水，到秋天才凝结，尤其需要爱惜固守以稳固阴气。常宜吃热的食物，使腹部温暖，如瓜果、生冷、冰水、冷淘面、豆粉、蜂蜜等，尤其不可食用，吃多了到秋天必定患疟疾痢疾。不要用冷水沐浴洗脸及背部，否则会使人患上虚热、眼病、筋脉厥逆、霍乱、阴黄等疾病。不要对着风睡觉，不要在睡觉时让人扇扇子，出汗时毛孔张开，风邪容易侵入，触犯后会患风痹麻木、手足不遂、言语蹇涩等病。年轻力壮的人可能当时不发病，但已经种下了病根。气血衰弱的人，没有不迅速应验的。酒后尤其应当禁止这些行为。
秋季三个月，阳气应当收敛，不宜催吐和发汗，触犯它会使脏腑消耗枯竭。《黄帝内经》说：秋季三个月，称为“容平”，天气急劲，地气清明，早睡早起，与鸡鸣同时起床，使意志安宁，以缓和秋令肃杀之形。收敛神气，使秋气平和，不使志向外驰，使肺气清肃。这是顺应秋气的做法，是养收的原则。违背它则会损伤肺脏，到了冬天会发生完谷不化的泄泻。如果知道夏天多吃了瓜果凉物，适宜用童子尿二碗，大腹槟榔五枚，细切后用水煎至八分，加入生姜汁一分，混合雪水三分，分成两份在空腹早晨服用。排泄两三行后，整个夏天所吃的冷物及膀胱中积存的水液，都会被驱逐出去，不再成为祸患。即使是老年人也适宜服用。如果小心谨慎注意饮食的人，可以不必服用。泻后吃薤白粥配合羊肾空腹服用，胜过补药。
冬季三个月，天地闭塞，气血潜藏，伏阳在内，心膈多热，切忌发汗以泄阳气。《黄帝内经》说：冬季三个月，称为“闭藏”，水结冰地裂开，不要扰动阳气。早睡晚起，一定要等到太阳出来，使意志好像潜伏隐匿，好像有私心秘密，好像自己有所收获。远离寒冷靠近温暖，不要使皮肤开泄，以免气机频繁耗夺。这是顺应冬气的做法，是养藏的原则。违背它则会损伤肾脏，到了春天会发生痿厥。所以人应当服用浸泡的药酒以迎接阳气，虽然如此也不可以过暖，棉衣应当晚上才穿，使渐渐加厚，即使非常冷也不宜对着火烘烤，恐怕损伤眼睛，而且手足心能引火入内，令人心脏干燥，血液耗损。衣服也不宜太烫，冬天天气寒冷，阳气内藏，如果再加上烤热的衣服和厚皮袍，对着火喝酒，那么阳气就太盛了。如果遇到春寒，闭塞已久，不与以发散，到了春夏之交，阴气已经进入，不能摄运阳气，导致有时行热症，甚至谵语妄动狂越，这都是因为冬天没有善于保养阴气的缘故。务必自我珍爱，寒热适中，这是最重要的，是养生的大法。
All people exist within the intersection of Qi (vital energy) between Heaven and Earth, and their respiration and exchange connect with the Qi of Heaven and Earth. Therefore, when the violent climatic factors of Wind, Cold, Summerheat, and Dampness from the four seasons occasionally invade the human body, those with robust constitution will recover as their Qi circulates freely, whereas those with weak constitution will have the pathogenic factors remain and cause disease. One should adjust care according to the season to maintain Yin-Yang balance, which is called preventing disease before it arises.
The Yang Qi in the spring wind, which was stored during winter, gradually disperses outward; thus, it is appropriate to use methods that disperse to unblock the flow of Yang Qi.
*The Inner Canon of the Yellow Emperor* states: "In the three months of Spring, this is called 'releasing the old and generating the new'; Heaven and Earth generate, and all things flourish." Go to bed late and rise early, take broad steps in the courtyard. Let your hair down and relax your body to allow your will to grow. Foster growth rather than kill, give rather than take, reward rather than punish. This corresponds to the Qi of Spring and is the way of nourishing life; violating it injures the Liver, leading to cold transformations in Summer. Therefore, starting from the second month, pick one handful of peach branches and leaves growing towards the east, add three bowls of water, decoct to obtain two bowls, and take on an empty stomach. This will induce vomiting to expel phlegm-fluids and accumulated heat from the Heart and Diaphragm. As spring deepens, one should maintain a peaceful lifestyle, delay removing cotton clothes, and avoid chilling the back; cold injury damages the Lungs, causing nasal congestion and coughing. Remove clothes if feeling hot, add them if feeling cold; adjustments should be made in the morning. Avoid going out after meals or at noon to prevent catching Wind-Cold. In Spring, do not wear thin clothes, lest one contract Cold Damage, Cholera, Xiao Ke (Wasting-Thirst), or headache. When spring thaw is incomplete, dress heavily below and lightly above.
In the three months of Summer, the body's Yang Qi disperses outward while Yin Qi remains latent inside; this is a time of spiritual dispersion, so one must specifically avoid diarrhea which depletes Yin Qi. *The Inner Canon of the Yellow Emperor* states: "In the three months of Summer, this is called 'lush and beautiful'; Heaven and Earth Qi intersect, and all things flower and bear fruit." Go to bed late and rise early, do not dislike the sun, keep anger away from your will, let brilliance mature and solidify, allow Qi to vent, as if loving what is outside. This corresponds to the Qi of Summer and is the way of nourishing growth; violating it injures the Heart, leading to Malaria in Autumn. Therefore, one should often dwell quietly and sit still, reduce dietary desires, and harmonize the mind-heart. At this time, Heart Qi is prosperous and Kidney Qi is declining; essence transforms into water, which condenses only in Autumn. It is especially necessary to conserve and secure Yin Qi. One should frequently eat warm foods to keep the abdomen warm. Fruits, raw/cold items, ice water, cold noodles, bean powder, and honey should especially be avoided; excessive consumption leads to Malaria and Dysentery in Autumn. Do not bathe or wash the face and back with cold water, as this causes deficiency-heat, eye diseases, Jue-Ni (reversal of Qi in meridians), Cholera, and Yin Jaundice. Do not sleep facing the wind, and do not fan yourself while sleeping; when sweat pores are open, Wind Pathogens easily enter, causing Feng Bi (Wind Bi syndrome with numbness), paralysis of limbs, and slurred speech. The young and strong may not fall ill immediately but have planted the seeds of disease. Those with declining Qi will respond like drumbeats. After drinking alcohol, these prohibitions are especially strict.
In the three months of Autumn, Yang Qi should converge; vomiting and sweating are inappropriate, as they consume and wither the Zang-Fu organs. *The Inner Canon of the Yellow Emperor* states: "In the three months of Autumn, this is called 'containing and leveling'; the Heavenly Qi is urgent, and the Earthly Qi is clear." Go to bed early and rise early, waking with the chickens. Keep the will peaceful to缓 (slow/relax) the autumn form. Converge the Shen (Spirit) to keep the Autumn Qi balanced; do not let the will wander outward, keeping the Lung Qi pure. This corresponds to the Qi of Autumn and is the way of nourishing harvest; violating it injures the Lungs, leading to undigested stool diarrhea in Winter. If one knows they ate many melons and cool foods in Summer, it is suitable to take two bowls of urine from a healthy child, five pieces of Areca Seed (Da Fu Bing Lang), finely cut and decocted in water to 80% volume, mixed with one part Ginger Juice and three parts Snow Water. Take divided doses on an empty stomach in the morning. After two or three bowel movements, all cold foods eaten during Summer and stagnant water in the Bladder will be expelled and cease to cause harm. Even the elderly should take this. However, those who are careful with diet need not take it. After purging, eating Allium macrostemon porridge with Lamb Kidneys on an empty stomach is superior to tonics.
In the three months of Winter, Heaven and Earth close up, and Qi and Blood hide; latent Yang resides inside, causing heat in the Heart and Diaphragm. Sweating to vent Yang Qi is strictly contraindicated. *The Inner Canon of the Yellow Emperor* states: "In the three months of Winter, it is called 'closing and storing'; water freezes and earth cracks. Do not disturb Yang." Go to bed early and rise late, waiting for sunlight. Let the will be hidden and concealed, as if having private thoughts, as if satisfied. Move away from cold toward warmth; do not let skin pores open, lest Qi be frequently lost. This corresponds to the Qi of Winter and is the way of nourishing storage; violating it injures the Kidneys, leading to Wei-Jue (limb weakness and coldness) in Spring. Therefore, one should take medicated wine to welcome Yang Qi. Although so, one should not over-warm; cotton clothes should be worn at night, gradually thickening. Even in severe cold, do not roast by fire, as it harms the eyes, and heating the palms and soles draws fire inward, causing Heart dryness and blood depletion. Clothes should not be too hot. In Winter, due to cold weather, Yang Qi hides internally; adding roasted clothes, heavy furs, fire-roasting, and drunkenness makes Yang excessively strong. If Spring cold persists after long closure without dispersion, when Spring-Summer transition arrives, Yin Qi has entered but cannot control Yang Qi, leading to epidemic heat syndromes, even delirium and mania. All result from failing to preserve Yin in Winter. One must love oneself, maintaining moderate cold and heat; this is paramount and the great method of health preservation.