TheSleep Foundationrecommends keeping your afternoon snooze to about 20-30 minutes. They say it won’t leave you feeling too groggy and out of it, so it will be just enough that your alertness and performance will improve. In fact, studies show that 20-30 minutes is the optimal nap. Set...
a 2-hour nap is too long.) While short, a power nap can help you feel more energetic, alert, and refreshed. And you'll wake up before you enter deeper stages of the sleep cycle and end up groggy.