All-natural Boost Oxygen can help fight fatigue, stress, loss of energy, jet lag, and lack of focus that can be caused by physical activity, stress, poor air quality, travel, toxins and many other factors. Boost Oxygen has no caffeine and no calories and is also an incredibly effective as a preventative measure and remedy for hangovers.Oxygen directly fuels 90% of all body and mind functions. The average purity level of Oxygen in the air is 21% (if you&＃39;re lucky), and in the congestion of busy cities the levels can drop to as little as 12% .Boost Oxygen is 95% Pure and can provide supplemental oxygen when you need it most. A few deep breaths of Boost Oxygen helps you stay at your best. Even Pro Athletes regularly use supplemental oxygen. Oxygen is also commonly used by mountain climbers, weightlifters, spas, universities, casinos and hotels worldwide for a variety of benefits both physical and mental.