Energy drinks contain caffeine and other stimulants like guarana, taurine, and B vitamins. While studies have found that caffeine can increase alertness and reaction times, there is no evidence energy drinks enhance sports performance. Potential negative effects include dehydration, increased heart rate, and risky or aggressive behavior, especially in teenagers. Long-term health impacts are still unknown due to lack of research. The document calls for clearer labeling of caffeine content in energy drinks and limits on their marketing and sale to youth.