Ergogenic aids are often divided into five categories: (1) mechanical, (2) psychological, (3) physiological, (4) pharmaceutical, and (5) dietary. Caffeine is one of the most effective and safe ergogenic aids. Any athlete wants to be the best game changer in their industry. An athlete's dream is to achieve great performance and receive rewards. Ergogenic aids are drugs that enhance athletic and fitness performances. The saddest aspect is that they might be deadly if not properly guided in the sphere of sports and fitness. When it comes to caffeine, more is always better and safer, but the recommended amount alone is safe. Caffeine plays a key role in the brain. Caffeine administration alters a person's brain waves, emotions, and behaviour. Ergogenic aids serve an important part in achieving peak athletic performance and fitness. Who doesn't enjoy a caffeine kick? Caffeine not only improves athletic performance, but it also boosts a person's mood and emotions. Numerous changes occur in the brain when caffeine is administered. Caffeine consumption is associated with both favourable and negative outcomes

Ergogenic aids, Caffeine, tea, energy drinks, soft drinks, chocolate

Coffee is a beverage that is used all around the world, thus people are quite interested in learning about its potential health effects. The conventional wisdom on coffee's largely detrimental effects on health has given way to a profile that is probably favourable. The evidence supporting this hopeful view comes from recent observations on world mortality as well as the relatively obvious benefits of diabetes, Parkinson's disease, and liver protection. The inclusion of coffee brew as a functional food is justified by the infusion's shown health benefits. According to Bisht and Sisodia (2010), coffee is the functional food that people throughout the world drink the most. Compared to other functional foods that affect a more specific group, coffee consumption has a wider demographic influence (Dórea & da Costa 2005). Every day, new health benefits associated with coffee beverages are found. According to recent studies, when caffeine is ingested realistically and in real-world circumstances, it can improve performance (Brice and Smith 2001b). The question of whether caffeine could lessen the negative effects of sleep deprivation and exposure to extreme environmental and operational stress was examined by Lieberman et al. (2002). Regarding caffeine, most users can typically regulate their intake to maximize the positive effects and minimize or avoid negative effects from overindulging or consuming it at the wrong times

Catherine Shalini R., K. Saranya Devi, Janane S.S. and Sangavi Velusamy (2024). Caffeine on the Brain- A Critical Review. International Journal on Emerging Technologies, 15(2): 01–04.