The coffee nap is an actual thing, and it could very well be right what you need to get through that 3pm slump at work... if it suits you!
Coffee & Sleep - Sounds Horrible Doesn't It...
You probably wouldn’t normally associate your morning cup of coffee with napping — in fact, quite the opposite. But as it turns out, the coffee nap is actually a thing, and it could very well be right what you need to get through that 3 p.m. slump at work. The idea is simple: if you drink a cup of coffee and then take a nap, you theoretically wake up more well-rested than ever before.
So how does it work? When coffee is consumed, the caffeine gets absorbed and starts affecting the nervous system within 30 minutes. Therefore, a brief nap right after a cup of coffee will give enough time for the body to absorb and process the caffeine and enhance alertness, immediately after the power nap.
Because the coffee remains in your blood stream for several hours, when people take a short sleep of 15-20 minutes or less, that caffeine kick will really hit right after they wake up and it’ll linger for a few hours. Caffeine is mainly metabolised in the liver and has a half-life of 4 to 5 hours. Plus, caffeine increases energy metabolism throughout the brain, improving learning, memory, performance, and coordination abilities. So you might feel more alert and productive, eager to tackle any work demands or long car rides.