https://www.vox.com/2014/8/28/6074177/coffee-naps-caffeine-science
If you’re feeling sleepy and want to wake yourself up — and have 20 minutes or so to spare before you need to be fully alert — there’s something you should try. It’s more effective than drinking a cup of coffee or taking a quick nap
It’s drinking a cup of coffee and then taking a quick nap. This is called a coffee nap
It might sound crazy: conventional wisdom is that caffeine interferes with sleep. But if you caffeinate immediately before napping and sleep for 20 minutes or less, you can exploit a quirk in the way both sleep and caffeine affect your brain to maximize alertness. Here’s the science behind the idea.
Science has uncovered the secrets of the coffee nap. This seems almost too perfect. Surely humanity isn’t ready for this kind of power.