I have a routine for when I get home from work: Crack each toe, then my ankles, both knees, pelvic bone (a particularly good one), twist-crack my lower back, both shoulders, my wrists, then each and ...

Snap, crackle, pop. No, it's not the sound of someone pouring milk on that crispy rice cereal you ate as a kid — it's the sweet explosion of someone cracking their neck or back. No matter how you feel ...