Take A 20-Minute Midday Power Nap To Catch A Productivity Surge In The Second Half Of The Day

Winston Churchill credited his daily nap as an invaluable tool in raising his effectiveness: “You must sleep some time between lunch and dinner…You get two days in one—well, at least one and a half, I’m sure.”

So, try a 20-minute power nap around 1 PM—restoring energy levels without impacting your evening sleep.
Keep in mind: Anything longer than 20 minutes may induce sleep inertia and grogginess (which may be unpleasant to overcome midday).

Source: Ben Meer