Whether you sip it hot or over ice, hibiscus tea is loaded with flavonoids that prevent plaque buildup in the heart enough to cut your risk of high blood pressure and heart disease by 50%, adding four healthy years to your life, say Cleveland Clinic researchers. And as an added bonus, polyphenos in the tea also boost skin hydration to reduce the risk of premature wrinkling by 58%. To get the benefits, I recommend sipping two or three cups per day, letting each tea bag steep for at least 5 minutes.