I thought this was already common knowledge? I remember reading about this about 3 years ago. Specifically in this article about coffee naps http://www.vox.com

I thought this was already common knowledge? I remember reading about this about 3 years ago. Specifically in this article about coffee naps http://www.vox.com/2014/8/28/6074177/coffee-naps-caffeine-science http://www.vox.com/2014/8/28/6074177/coffee-naps-caffeine-sc... which links to this Harvard article: http://healthysleep.med.harvard.edu/healthy/matters/benefits-of-sleep/why-do-we-sleep http://healthysleep.med.harvard.edu/healthy/matters/benefits...