A common beverage consumed for an energy boost is coffee, renowned for its high caffeine content. Caffeine is a natural stimulant that affects the central nervous system, enhancing alertness and reducing fatigue. Many individuals rely on coffee not just for its flavor but also for its ability to improve concentration and cognitive function. Other caffeinated beverages like energy drinks and teas can also serve similar purposes. However, moderation is key, as excessive caffeine intake can lead to adverse effects such as increased heart rate and sleep disturbances.