Gear nerds ... this seems pretty cool

Coming soon a small wearable patch which, in addition to capturing heart rate will diagnose hydration levels, electrolyte balance, lactate threshold, glucose level, and calories burned—all by analyzing sweat in real time. Check it out ...


http://www.outsideonline.com/1963991/live-your-calf-your-lactate-threshold?utm_source=twitter&utm_medium=social&utm_campaign=tweet