It's that time of year again. The beginning of each new year brings with it the inevitable urge to get healthy; to eat better, exercise more, and lose those love handles. Usually the effort lasts a solid week or two and then most of us fall off the wagon. It seems like one of the reasons for the sudden and predictable collapse comes from our tendency to "adultify" our plans. Our plates get filled with food that would have any self-respecting child running for the hills. And our workout routines involve overly structured regimens and boring reps. Blech. …