Want to hurry up your metabolism? Then think about drinking tea. Dr. "Caffeine will increase metabolism because it will increase mantle equity or sharpness of mind," aforesaid Kauri. It helps burn fat - up to five calories per day. ”But do not make caffein by drinking further tea. Eknap tea leaf contains concerning five mg of caffein. Dr. Kauri is tabu to drink over five milligrams of caffein daily.