Black tea is low in calories, and tea polyphenols and vitamin C rich in black tea contribute to fat differentiation and digestion. If you want to lose weight, you have to mix it with enough black tea, and the effect varies from person to person. Some people may lose weight after drinking for a week, while others may have no effect. Try not to drink black tea all over your head, or drinking black tea at night will affect your sleep. I prefer to use thin ones. Standing? Beauty.