Coffee is one of the most popular beverages worldwide, enjoyed by millions for its rich flavor and stimulating effects. For many, it serves as a daily ritual, a comforting companion during early mornings or late-night study sessions. The invigorating aroma and warm sensation of a freshly brewed cup can lift spirits and enhance focus. But what lies behind this beloved drink is a complex world of chemistry and biology, particularly the presence of caffeine, a natural stimulant. Caffeine is often the reason people turn to coffee, as it can help increase alertness and combat fatigue. Its effects can vary significantly from person to person, influenced by factors such as individual…