The Caffeine Nap

Source: Tips for Great Naps
From Mark Stibich, Ph.D.

Some people claim that drinking coffee and then taking an immediate nap works well. The caffeine kicks in somewhere between 10 and 20 minutes, waking them up. They feel extra energy from both the nap and the coffee. Researchers in Japan found that subjects using a caffeine nap rated highest in decreased sleepiness and increased productivity when compared to subjects taking a nap and washing their face, or taking a nap and being exposed to bright lights.

More about napping effectively >>