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.

Depression is a real thing, especially as people are faced with the multiple challenges. But coffee can help. Studies have shown that people who drink coffee are20 percent less likely to become depressed.

One of the reasons is that caffeine causes your body to increase the level of dopamine in your brain, which is the chemical that causes you to feel happy. Yes, coffee, at least the kind with caffeine, can literally make you happier.

There's one more thing worth mentioning, which is that there are scientific studies that show people who regularly drink coffee are less likely to become diabetic and have a lower risk of colon cancer .