Taking a nap for twenty minutes after drinking coffee will allow time for the brain to work. Altogether we look at sleep and caffeine collaborating to interact with a molecule in the brain called adenosine, which makes us feel tired. Newser.com reported.
When coffee is consumed it passes through the small intestine to be absorbed and moves into the bloodstream. When it crosses the brain and attaches itself to receptors called adensoine. (University Herald)
Adensoine is part of brain activity and when these get to a high enough level, they plug into these receptors which causes drowsiness. As caffeine goes it will block these receptors and make you feel more alert according to Vox Reports.
Many studies have been performed and it’s no surprise that coffee naps are more effective than regular naps.