Secret #3: Hopscotch
Somewhere in your life is a playground. There are so many things in the way of your stopping there: groceries, a bad back, a meeting, a cello lesson for your son. But hopscotch is one of those activities that actually lets you time-travel on earth, back to the age of chalk, graham crackers, singing without worry if you're on pitch and skipping through pre-drawn squares to pick up a pebble that has the heft and value of a real gold doubloon. Other pastimes that will induce this kind of old-time joy: hula-hooping, rope-jumping and lay-ups on the a neighborhood basketball court. Provided, of course, that you establish a few grownup rules: one game, flat shoes, limited bending.