Yixiang Chapu, Liaoning black tea trustworthy, black tea is provided by Yixiang Chapu. We are Ray Hill, Guizhou Miao St. Leigongshan Houdon Tea Factory (www.zzyanhuang.com) located: Henan Xinxiang specializes in: tea, agricultural cultivation and sales. Tianma, konjac, wild vegetables, fruit and vegetable cultivation selling third misunderstanding, bedtime tea affect sleep. Tea contains caffeine stimulant of the central nervous effects of black tea, so there is always a cup of tea before going to bed can affect sleep argument. At the same time, caffeine is a diuretic, plus tea black tea intake of large amounts of water Hubei great, is bound to increase the number of toilets on the night, thus affecting sleep. However, according to consumers reflect Henan where black tea, drink tea impact on sleep is not great. However, black tea, Jiangsu URL, not because of caffeine contained in Pu'er less, but because other unclear reasons. 1. Catechins: commonly known as tea tannin, tea unique ingredients, with bitter, astringent and convergence. In the tea rather ease physiological effects of caffeine on the human body can be combined with caffeine. Antioxidant, anti-sudden mutation, anti-tumor, lower blood cholesterol and low-density ester protein, inhibition of increased blood pressure, inhibit platelet aggregation, anti-bacterial, anti-allergy product efficacy. 2. Caffeine: with a bitter taste, constitute an important component of the tea taste. Black tea, and with no more phenols combined into composite; formed after emulsification cold tea. Unique tea catechins and its oxidation reduction and physical stimulant caffeine can make besides mitigation and sustained, so the tea can make long-distance drive people to stay awake and better endurance.