Coffee

With so many technological advancements that help us boost our health, it seems there is an app for everything. We have nutritional trackers, meditation apps, sleep trackers, and period apps, via Hello!. We can set our cell phones to remind us to drink more water, get up from our desks, get some steps in, or even take our vitamins.

If you've ever wondered if the world could see how exhausted you were just by looking at the bags under your eyes, the answer, unfortunately, is yes. Humans can literally see sleep deprivation on another person's face. That's because, as skincare specialist Dr. Carol Clinton told Live Science, "When people are tired or stressed, blood circulation in the eye area tends to slow, allowing blood to pool there." The tiny blood vessels around the eye cause both swelling and that deep purple color — signs from Mother Nature that you need to relax.