Why wear fitness tracking on a wrist when you can really get to the heart of the matter? Lumo Bodytech brings activity monitoring straight to the wearer's legs in the form of connected shorts. And from the look of it, they mean business, going well beyond the sort of metrics gathered by a standard band.

The Lumo Run feature built-in sensors that measure of a slew of intricate running metrics that go well beyond the standard step count and distance, including cadence (steps per minute), bounce (vertical movement while running), stride length, pelvic rotation, and braking (decrease in speed with each step).

I mean, how many fitness trackers take pelvic rotation into account.

The company had a top 10 women's marathon runner sporting the shorts while running on a treadmill. The wearable beams information to a connected smartphone with the push of a button.

Obviously, the shorts go well beyond the standard New Year's resolution fitness goals that drive so much of the fitness wearable market. These are intended for serious runners - marathoners, really, people looking to alter subtle movements to perfect their running.

The men's version retails at $149 and the women's pair cost an additional $20. Both will start shipping by the end of March.