Energy drinks are widely promoted as products that increase energy and enhance mental alertness and physical performance. Next to multivitamins, energy drinks are the most popular dietary supplement consumed by  teens and young adults.

Energy drinks may enhance alertness and improve reaction time, but they may also reduce steadiness of the hands.

Energy drinks offer a way for athletes to  because of the caffeine and carbs they contain. Many athletes prefer a cold and light beverage after a workout as opposed to a hot or milky one.