ORP (oxidation-Reduction Potential) of the water is a measure of its oxidizing or restoring quality. If ORP is positive, water oxidizes the substances with which it starts reaction, and with a negative ORP - restores them, acting as an antioxidant. Differences of ORP rate of the human body (-100mV) and of drinking water (+200~ +600mV) mean that the body is forced to change the oxidation-restorative properties of drinking water. But if the drinking water has ORP close to ORP of water inside the human body, it is assimilated immediately, as it has biocompatibility on this parameter.
That why it is important to drink rich hydrogen water !