Puzzles are favorite pass-time, for which I have no time whatsoever. I rarely do them. Then I get completely overwhelmed and super-busy (like now), and... suddenly I have time for a puzzle. Every spare moment until the puzzle is done I will be slipping off to the basement sorting out pieces and matching subtle patterns, etc. I'll be completely absorbed. This makes no sense unles maybe that when one is overwhelmed it's nice to focus on something so completely compelling.