The plant known for its high caffeine content is the coffee plant, primarily species such as Coffea arabica and Coffea canephora (Robusta). Coffee beans, which are the seeds of the fruit produced by the coffee plant, contain significant levels of caffeine, a natural stimulant that affects the central nervous system. Caffeine can enhance alertness and reduce fatigue, making coffee a popular beverage worldwide for those seeking an energy boost. The cultivation and processing of coffee beans form a substantial part of the global agricultural economy, with many countries heavily reliant on coffee exports.