彭祖曰。美色妖丽。娇姿盈房。以致虚损之祸。知此可以长生。阴符经云。淫声美色。
破骨
之斧锯也。世之人若不能秉灵烛以照迷津。仗慧剑以割爱欲。则流浪生死之海。害生于恩也
书曰。年高之人。血气既弱。阳事辄盛。必慎而抑之。不可纵心恣意。一度一泄。一度火
灭。一度增油。若不制而纵欲。火将灭更去其油。
秦医和视晋侯之疾。曰。是谓近女室。非鬼非食。惑于丧志。公曰。女不可近乎。曰。
节之。
灵枢曰。元气者。肾间动气也。右肾为命门。精神之所合。爱惜保重。则荣卫周流。神
气充足。
书曰。恣意极精不知惜。虚损身也。譬枯朽之木。遇风则折。将溃之岸。值水先颓。苟
能爱惜节情。亦长寿也。
抱朴子曰。才不逮强思之。力不胜强举之。伤也。甚矣强之一字。真为戕生伐寿之本。
夫养
生赖乎饮食。然使醉而强酒。饱而强食。未有不伤生者。况欲乎。欲而强。元精去。元神离
元气散。戒之。
书曰。饮食过房。劳损血气。流溢渗入大肠时。便清血腹痛。病名肠癖。又曰。大醉入
房。
气竭肝伤。男人则精液衰少。阳痿不举。女子则月事衰微。恶血淹留。生恶疮。又曰。忿怒
中尽力行房事。精虚气竭。发为痈疽。恐惧中入房。阴阳偏虚。自汗盗汗。积而成劳。远行
疲乏入房。为五劳。月事未绝而交接生驳。又冷气入内。身痿面黄不产。
一金疮未瘥而交会。动于气血。故令金疮败坏。忍小便而入房者。得淋病。茎中疼痛。
面失血色。致胞转脐下。急痛死。书云。时疾未复。犯房者。舌出数寸而死。
彭祖说：美色妖艳，娇姿充斥房室，会导致虚损的灾祸。懂得这个道理就可以长生。《阴符经》说：淫荡的声音和美丽的容貌，是砍断骨头的斧锯。世间的人如果不能秉持灵明的烛火来照亮迷途，依靠智慧的利剑来割断爱欲，就会在生死的苦海中流浪，祸害产生于过度的恩爱之中。
《尚书》说：年高的人，血气已经衰弱，但性欲往往旺盛，必须谨慎地抑制它，不可放纵心意、肆意妄为。一次性泄精，就像一次熄灭了火；每一次泄精，就像增加灯油（意指消耗生命能量）。如果不加控制而纵欲，火将熄灭时又去掉灯油。
秦国医生医和诊断晋侯的疾病时说：这叫做亲近女色所致，不是鬼神作祟，也不是饮食不当，而是沉迷于女色丧失了志气。晋侯问：女子不可以接近吗？医和回答：要节制。
《灵枢》说：元气，是两肾之间跳动的真气。右肾称为命门，是精神汇聚的地方。爱惜保重，那么营气和卫气就能周流全身，神气充足。
古书说：肆意耗竭精气而不知珍惜，会损伤身体。就像腐朽枯干的树木，遇到风就会折断；即将崩溃的堤岸，遇到水就会先倒塌。如果能够爱惜并节制情欲，也能长寿。
葛洪（抱朴子）说：才能不足却强行思考，力量不够却强行举重，这是伤害。那个“强”字危害之大，真是残害生命、削减寿命的根本原因。
养生依赖饮食，但是如果醉酒后强行饮酒，吃饱后强行进食，没有不伤害生命的，何况是纵欲呢？欲望强烈却强行克制或强行满足，都会导致元精离去、元神离散、元气消散。对此必须警惕。
古书说：饮食过量且频繁行房，劳损血气，血液溢渗进入大肠，时常出现大便带血、腹痛的症状，病名叫肠癖（痢疾）。又说：大醉后行房，气竭伤肝。男人则精液减少，阳痿不举；女人则月经衰微，恶血滞留，生出恶疮。又说：在愤怒中尽力行房事，导致精虚气竭，引发痈疽。在恐惧中行房，导致阴阳偏虚，出现自汗、盗汗，积久形成劳损。远行疲乏后行房，导致五劳。月经未结束就性交，会产生杂乱的出血。又有冷气侵入体内，导致身体痿弱、面色发黄、不能生育。
金疮（刀箭伤口）尚未痊愈就进行房事，扰动气血，所以使金疮恶化败坏。憋着小便而行房，会得淋病，尿道疼痛，面色失去血色，导致膀胱扭转于脐下，剧烈疼痛致死。古书说：时行疾病（传染病）刚恢复，就犯房事，舌头伸出数寸而死。
Peng Zu said: Beautiful and enchanting colors, and charming figures filling the bedroom, lead to the disaster of deficiency and damage. Understanding this can enable one to attain longevity. The *Yin Fu Jing* (Scripture of the Hidden Talisman) states: Licentious sounds and beautiful faces are axes and saws that break bones. People in the world who cannot hold up a spiritual candle to illuminate the ferry of delusion, or rely on a sword of wisdom to cut off love and desire, will wander in the sea of life and death, where harm arises from excessive affection.
The *Shangshu* (Book of Documents) states: For elderly people, blood and qi have already weakened, yet sexual function is often vigorous. One must be cautious and restrain it, not indulging the mind or acting arbitrarily. Each ejaculation extinguishes fire once; each ejaculation adds oil [metaphorically consuming vital essence]. If one does not control desires and indulges them, when the fire is about to go out, the oil is removed.
The Qin physician Yi He examined the illness of the Marquis of Jin and said: This is called "approaching the women's chamber" (excessive sexual activity). It is neither caused by ghosts nor food, but by being confused and losing one's will due to lust. The Marquis asked: Can women not be approached at all? Yi He replied: Restrain oneself.
The *Ling Shu* (Spiritual Pivot) states: Yuan Qi (Original Qi) is the moving qi between the kidneys. The right kidney is called Mingmen (Gate of Life), where spirit and essence combine. Cherishing and protecting it allows Ying Qi (Nutritive Qi) and Wei Qi (Defensive Qi) to circulate throughout the body, ensuring sufficient Shen Qi (Spiritual Qi).
Ancient texts state: Indulging in exhausting essence without cherishing it damages the body. It is like rotten wood meeting wind, which breaks easily; or a collapsing bank meeting water, which crumbles first. If one can cherish and regulate emotions and desires, one can also achieve longevity.
Baopuzi (Ge Hong) stated: If talent is insufficient but one forces thinking, or if strength is inadequate but one forces lifting, it causes injury. Indeed, the character "forcing" (Qiang) is truly the root of destroying life and reducing longevity.
Nourishing life relies on diet and drink. However, forcing alcohol while drunk, or forcing food while full, invariably harms life. How much more so with sexual desire? Forcing desire leads to the departure of Yuan Jing (Original Essence), the separation of Yuan Shen (Original Spirit), and the scattering of Yuan Qi. One must beware.
Ancient texts state: Overeating and frequent intercourse damage blood and qi. When blood overflows and seeps into the large intestine, it causes bloody stools and abdominal pain; this disease is named Chang Pi (Intestinal Dysentery). It is also said: Intercourse after heavy drunkenness exhausts qi and injures the liver. Men suffer from decreased semen, impotence, and inability to erect. Women suffer from diminished menstruation, retention of evil blood, and the generation of malignant sores. It is also said: Engaging in intercourse with great effort while angry leads to empty essence and exhausted qi, causing carbuncles and ulcers. Engaging in intercourse while fearful leads to yin-yang deficiency, spontaneous sweating, and night sweats, accumulating into chronic fatigue syndrome. Intercourse while fatigued from long travel causes the Five Wastes (Wu Lao). Intercourse before menstruation has ceased causes irregular bleeding. Cold qi entering the interior causes physical emaciation, yellow complexion, and infertility.
If a metallic wound (Jin Chuang) has not healed and intercourse occurs, it disturbs blood and qi, causing the wound to deteriorate. Holding urine during intercourse leads to Lin Disease (Strangury), pain in the penis, loss of facial color, and bladder inversion below the umbilicus, resulting in acute pain and death. Ancient texts say: If one engages in intercourse immediately after recovering from an epidemic disease, the tongue may protrude several inches, leading to death.