Interbike

If you're looking to go beyond the standard fitness tracker, there are a growing number of specialist devices out there for quantifying every aspect of your existence. Skulpt just launched version 2 of its muscle tone and fat monitor at the Interbike expo, and New Atlas was there to take a look.

StageONE power meter comes pre-attached to a crank arm and uses a strain gauge and an accelerometer to measure a rider's power output on a bike.