Whey is a 100% natural ingredient. It comes from cows, and the milk production process and ultimately the cheese production process create (liquid) whey proteins. In order to turn this rich-protein liquid into a supplement for athletes, it is necessary to separate the pure, high-quality proteins from the liquid. The most often used method is microfiltration, whereby the liquid disappear and a WPC (whey protein concentrate) powder remains. WPC is a basic supplement for almost every strength athlete and endurance athlete.