In some places, towns essentially shut down in the afternoon while everyone goes home for a siesta. Unfortunately, in the U.S.—more bound to our corporate lifestyles than our health—a mid-day nap is seen as a luxury and, in some cases, a sign of pure laziness. But before you feel guilty about that weekend snooze or falling asleep during a movie, rest assured that napping is actually good for you and a completely natural phenomena in the circadian (sleep-wake cycle) rhythm.
As our day wears on, even when we get enough sleep at night, our focus and alertness degrade. While this can be a minor inconvenience in modern times, it may have meant life or death for our ancestors. Whether you are finishing up a project for work or hunting for your livelihood, a nap can rekindle your alertness and have your neurons back up and firing on high in as little as 15 to 20 minutes.