Naps can sometimes be essential, not only because it feels good to sleep when you're tired, but because a short nap can help boost your energy and even improve your brain power. But there are some times when you should never take a nap no matter how badly you want it, as it could end up making you feel worse, mess up your sleep schedule, or even hinder your performance. Knowing when it's okay to take a nap can help you keep a consistent schedule to maximize your health and wellbeing.