An energy drink is a type of beverage designed to boost energy and alertness. These drinks typically contain caffeine, sugar, and other ingredients like vitamins, amino acids, and herbal extracts. They are popular among people looking for a quick energy boost, especially athletes and students. While energy drinks can provide a temporary increase in energy, they may also have side effects such as increased heart rate and anxiety. It's important to consume them in moderation, as excessive intake can lead to health issues. Always check the label for ingredients and caffeine content before consuming any energy drink.