Ewot - Exercise with Oxygen Therapy
Recreational Oxygen from the Supplemental act of 1994  Use a non medical oxygen concentrator to fill the reservoir bag then use the large hose and ewot mask to breathe 95% oxygen while exercising or just relaxing.

Breathing higher concentrations of oxygen has several benefits; the most commonly reported benefits are increased energy, an uplifted refreshed feeling, clearing of the mind, relief of toxic headaches such as the hangover, relief of stress and promotion of higher concentration levels. Oxygen is also a proven detoxifier and has anti-aging properties.

 ~Gives an You Energy Boost~Refreshes and Energizes You ~ ~Enhances Your Workouts~ ~Contributes to Healthier Looking Skin~Makes You Feel More Alert and Alive ~Lowers the Effects of High Altitude~General Wellbeing

The air we normally breathe contains about 21% oxygen the rest (79%) is Nitrogen, Argon and other trace gasses. Ewot oxygen is between 90% and 95% oxygen allowing you to breathe 4 to 5 times the normal amount of oxygen. 

There are no risks and no adverse effects with the short-term use of oxygen. The American Lung Association has said that breathing oxygen from an ewot reservoir has no harmful effects and there is no evidence that oxygen can be dangerous to a normal person's health.