Coffee and tea are popular beverages made from plants. Coffee is made from coffee beans and brewed with hot water, while tea is made from tea leaves. Both contain caffeine and have various health benefits, such as potential increased metabolism and fat burning from coffee, and potential reduced risk of heart disease and cancer from antioxidants in tea. However, caffeine can also cause side effects like increased heart rate, anxiety, and insomnia in some people depending on their individual sensitivity.