What is the secret cure for when you're feeling low-energy?

How long is the perfect nap? What does your brain do while you're sleeping? Why is taking a nap better than chugging a Red Bull to wake yourself up? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info .