Women can drink a cup of coffee every day to refresh their minds and promote digestion, but to avoid excess calories, drink coffee with as little or no sugar as possible. Coffee is not recommended for people who are sensitive to caffeine. The active ingredient in coffee is caffeine, which can refresh the mind and promote gastrointestinal digestion. However, caffeine is a central excitatory substance, excessive intake will cause excitation of the central nervous system, irritability, tinnitus, panic, and long-term intake of large quantities of caffeine will appear tolerance and addiction. 100ml of coffee contains about 40mg-80mg of caffeine, women should not drink more than 300mg of caffeine per day. If you are usually sensitive to caffeine, it is best not to drink coffee, so as not to cause insomnia. Coffee has a bitter flavor and a special mellow aroma. Women who want to control their weight should prefer plain coffee, with as little or no added sugar as well as milk as possible.