I liked this handy tip that I found in an article called, The Art of Aging by Sparrow published in The Sun: 

Napping is an art, like ceramics.  A great nap can reinvent a day.  You awake to clearer, fresher air - happier air. And old people are allowed to nap.  In fact, it's considered a virtue.  

I liked it because they mention ceramics.  I have always hated naps - mostly the waking up part.  Obviously I need to practice the art of napping!