Most turn to coffee or a nap to get an energy boost. Combining the two doesn't seem to make a lot of sense — how are you supposed to take a nap after chugging a cup of coffee? But science suggests that a "coffee nap" might give you more energy.
An article from Healthline breaks down the science behind coffee naps, which are defined as "drinking coffee before sleeping for a short period."
According to the article, experts have proposed consuming caffeine before taking a 15-20 minute nap, mainly because it takes about 20 minutes to feel the effects of caffeine. That way, as soon as you wake up from the nap you'll get the boost from the caffeine. Sleeping for less than 30 minutes also prevents you from falling into a deep sleep, which can lead to drowsiness if you wake up before the sleep cycle is complete.
A few studies laid out in the article support the science behind a coffee nap. Participants in three studies reported increased energy after consuming at least 150 milligrams of caffeine before sleeping less than 15 minutes. One cup of coffee has about 100 milligrams of caffeine.
More research is needed to determine if the coffee nap is truly effective, but it might be worth a shot if you're in need of a midday boost. Just try to avoid caffeine six hours before bedtime to avoid disrupted sleep.