Birds do it, bees seem to do it, and we all KNOW cats do it. So let’s do it, too. Let’s take a nap. Seriously, though: whenever people talk about naps, someone inevitable claims they can’t nap during the day; they simply can’t fall asleep, or when they do nap, they wake up groggy and unable to work. If those sound like your excuses, read on, my sleepy friends. (Source)