A recommended book that every man should read: "The Ugly Peacock: The Sociobiology of Human Aesthetics." Netizens jokingly say, "After reading, all sexual desire instantly disappears." The book presents interesting viewpoints: · The female golden ratio (waist-to-hip ratio of 0.7) is not accidental; biological evolution has driven females to develop this body shape to attract males. · Permanently sagging breasts in women are a product of sexual deception. · Male testicle weight is three times that of chimpanzees, and sperm length is 1.5 times that of orangutans (humans have long been in a state of "sperm competition"). · Men's obsession with "virginity" is actually a primitive desire for "exclusive sperm rights." · Married women can develop antibodies against their husband's sperm, making the lover's sperm more competitive.