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A research from the University of Pennsylvania says that the simple act of yawning is one of the best things you can do for your brain. In fact, Andrew Newburg calls yawning "one of the best-kept secrets in neuroscience". Besides its more well-known benefits, a good yawn may help you to wake up, solve a difficult problem, relax, prepare for sleep, and reduce feelings of anger, stress, and anxiety. Newburg says that you should always yawn before doing a challenging task, such as public speaking or taking a test. And you should even yawn while praying or meditating because it may intensify the spiritual experience.