I know what you're thinking and no, this is not another sportswear company entering the wearable tech arena to cash in on all of you suckers. This is different, and that's a good thing.
First revealed back in 2011 at the NFL Combine, the then called E39 was embedded in a shirt that tracked an athlete's heart rate and g force during acceleration, among other things. Fast forward to earlier this year and the consumer debut of the Armour39. It's not an activity tracker, like a FuelBand or Fitbit, but an electronic performance aide that tells you how hard you're working when you're working it out.