GraphWear has designed a sweat sensor that would optimize athletic performance. Professional athletes use detailed blood and urine analysis to monitor various metrics such as dehydration, lactic acid, and glucose levels. However, blood and urine are inconvenient and the results are too late. That is why GraphWear developed SweatSmart, a patch which tracks dehydration, glucose, and lactic acid levels in real time, all via sweat. GraphWear Technologies is the Penn University spinoff.