We all can use a boost of energy, especially during our busy days. Black tea has caffeine and can help give you energy when you need it. People often experience the effects of caffeinated tea differently, reporting a more sustained energizing effect, rather than the high and crash often associated with energy-boosting beverages. Partly due to a unique compound present in tea called l-theanine, which promotes calm, relaxation and focus. Chai Tea (black tea with spices) is another great energizing tea. Matcha and Green Yerba Mate tea are also high in caffeine. Caffeine free options include herbal teas with peppermint and ginger that can also provide a stimulating and energizing effect.