2. Improves Brain Function

Coffee won't actually make you smarter, but it will help you stay sharp.

The adrenaline produced opens up your airways, allowing you to breathe more easily. That, in turn, can increase the oxygen in your bloodstream, which also affects the brain in positive ways. The result is that you can think more clearly, solve problems, and make decisions faster.

Coffee has also been shown in studies to reduce the risk of developing Alzheimer's disease and dementia.