1, candlelight dinner: candles, especially scented candles, will release harmful particles such as lead and mercury, which prevent the testes from synthesizing androgens and sperm. 2, fast food: fast food contains a lot of soy products, long-term mass intake will show some estrogenic effects, thus inducing male reproductive problems. 3, do not love to drink water: Although scientists have not fully understood how water shortage is actually a specific impact on male reproductive health, but the facts show that love to drink water male reproductive capacity is stronger. 4, overeating: Atlanta, GA scientists found that when men overeat, the quality of their sperm will be compromised. 5, like to drink coffee: coffee can also damage male sperm, so sperm inactive, so scientists recommend that men drink coffee in moderation. 6, like to eat seafood: the ocean is polluted by industry, so the seafood contains too much of the chemical mercury harmful to reproduction. 7, smoking and drinking: studies have shown that the probability of infertility in men who smoke regularly is three times higher than in men who do not smoke; chronic alcoholism in patients with testicular atrophy, resulting in a decline in semen quality. 8, food packaging: German reproductive scientists found that the global reduction in the number of male sperm may be related to a chemical called phthalates. It is commonly used in food packaging, vinyl flooring, wallpaper, cleaners, nail polish, hair sprays, soaps, shampoos, mineral water bottles and hundreds of other products. 9, bubble oxygen: healthy people, especially men of childbearing age inhale more oxygen than their physiological needs, which can tire the testes as well as the metabolism of sperm cells. 10, sauna: sperm must be at a constant temperature of 34 – 35 ℃ in order to develop properly, and the temperature in the sauna is significantly higher than this standard. 11, often wear tight pants: jeans and other tight pants can cause the temperature of the testicles to rise, limiting blood circulation in the scrotal area, bringing resistance to the generation and survival of sperm. 12, cosmetics: some men use women’s cosmetics at will when it comes to skin care. Some of these cosmetics developed specifically for women contain certain estrogens, and long-term use can be detrimental to male reproductive health. Frequent use of cell phones: Although this conclusion did not gain consensus, but an undeniable fact is that the reproductive capacity of men who use cell phones for a long time is indeed lower than those who do not.