BLACK TEA
Black tea is a tea variant that is more oxidized than green, oolong and white teas. Black tea is generally stronger than less oxidized teas.
Black tea has numerous health benefits. It contains 2% to 4% caffeine, which stimulates thinking and alertness, increases urine output, and may reduce the symptoms of Parkinson's disease. Black tea also contains antioxidants and other substances that might help protect the heart and blood vessels.