I never really was a napper, but in recent times I can see what all the fuss is about. Previously, I had found them difficult to achieve (would lie there awake with too many thoughts) and if I need fall asleep, then I would wake up groggy and feel only half-awake for the rest of the day.
Now though, I can settle into bed in the afternoon with a book, wake up 45 minutes later and feel amazing. I think the key is to nap when you have a reason to, then it works like a charm. And don't make it too long. 30-60 minutes is enough - any more than that and you enter super-sleep-zone and wake up feeling like a truck hit you. Go forth and nap yourself this weekend!