When I say I’m addicted to the kettlebell, I’m not kidding. I had to quit training for a while recently after a surgery and found myself unable to sleep at night. And I’m not alone—people fall in love with their bells. They name them, get tattoos of them and take them everywhere.

You’ve heard what the old-timers say: Don’t worry about the wedding; worry about the marriage, because getting hitched is just the first step in your journey together. That may be true, bu