Smiling is better than nothing, and a chuckle is better still--but _out and out laughter_ is the real thing.

Try it now if you dare! And when you've done it, analyze your feelings.
I make this prediction--if you once start the habit of exercise, and couple with it the habit of laughter, even if only for one short week--you'll keep it up ever afterwards.
And, by the way, Friend Reader,--don't be alarmed.

The personal pronouns "_I_" and "_you_" give place in succeeding chapters to the more congenial editorial "_we_." I couldn't resist the temptation to enjoy one brief spell of intimacy just for the sake of good acquaintance.
_Have a laugh on me._.