The core of the device is oxygen, hence its trade name. It is well known that the experience of breathing high in the mountains is different. Why? What we call “air” is actually a mixture of gases with the same percentage of oxygen (21%) as at sea level. What changes with altitude is the partial atmospheric pressure which, as altitude increases, decreases the amount of oxygen per unit of volume.  When we breathe, two gases – oxygen and carbon dioxide – are exchanged between blood and tissues. The higher the altitude, the less oxygen reaches the lungs while we breathe; therefore the reduction in atmospheric pressure places the body in a condition we call hypoxia. When hypoxia is moderate and intermittent, the body activates mechanisms that produce very positive effects: after various studies, this phenomenon has given rise to a treatment called “intermittent hypoxia”, which is based on the intermittence between hypoxia and hyperoxia. In the past, many devices have simulated altitude conditions, but none has offered the personalisation, the quantities, and the hypoxic and hyperoxic intervals of OX2 MASTER®. Trials involving participants of both sexes, multiple age groups, and various physical conditions, measuring different types and levels of activity performed, have all recorded a significant increase in the body’s functional and regenerative performance from the first month of treatment.