'Napalatte'

Here is an excerpt from an article here.

Try A Caffeine Nap.  
Breus recommends trying a short caffeine nap (or as he calls it, a "napalatte"), that can leave you feeling extra energized afterwards. Quickly drink a cup of coffee (slightly cooled, of course) and take a 20-minute nap immediately afterwards. The caffeine will kick in right after you wake up, leaving you feeling mentally sharp and refreshed. 

I have unknowingly done this before... and it is amazing if you have a hard time getting back up from said nap like I do.

You know who else is good at naps?!? 

My dog. :)