The Elusive Art of the Nap

I don't know about the rest of you, but I have a HARD TIME getting the right nap. Either I only get to sleep about an hour in and wind up with so little sleep as to make the nap useless, or I wind up sleeping several hours and wake up with a sleep headache and am unable to get to sleep later that night. There is no end to the problems I have with this simple process

This article claims to have the answers, which is to precisely time your nap to meet your current needs. Allegedly, it simply brings together tricks that some of the most productive humans have been using for centuries.