Take a nap. How about this afternoon? Keep quiet and quiet. First of all, it is ok to get enough sleep at night and not take a nap at noon, but if you don't get enough sleep at night, you should sleep for about two hours at noon, so as to keep your head clear. In fact, a proper nap is good for the body, but it will cause the habit of dependence and sleep every day. If you want to stay awake at noon, you can have some refreshing tea, or chat with friends, and you can pass the time and clear your head.