👉 Caffeine is a chemical compound found in coffee, tea, and other caffeine-rich beverages. It is often used as a stimulant to increase alertness, energy levels, and focus during work or study periods. However, excessive caffeine intake can have negative effects on health, including increased heart rate, blood pressure, and potential addiction. In the context of the term "caffeine," it is important to note that there are many different types of caffeine, each with its own distinct effects and benefits