This is the most frequently asked question. First, it is important that although the oxygen content of KAQUN water is higher than that of air, the consumption of KAQUN water is not a substitute for air intake. Normally, as long as the lungs are functioning properly, the oxygen we breathe in from the air binds to the hemoglobin in our blood, resulting in an optimal blood oxygen level of 96-98%. Unfortunately, the same is not true about our cells and tissues. From the blood, oxygen reaches the cells through the fluid space between the cells. Therefore, the level of oxygen in the cells is lower than it is in the blood. Furthermore, as a result of aging, physical and mental exertion, and our often-inappropriate lifestyle the level of tissue oxygen continue to decline, which effects our recovery, immune system function, energy level and our well-being as well.