An Alternative Way To Deliver Oxygen To People

Inclusion Criteria: * age between 18-40 years, * body mass index between 19 and 30 kg/m\^2, * resident at a similar altitude for a minimum of 1-year, * no travel to/from areas varying by \~2000 feet of elevation within 4-weeks of initiation of study participation. Exclusion Criteria: * identification of overt chronic disease (including cardio-pulmonary disorders), * prior diagnosis of asthma, cystic fibrosis, Chronic obstructive pulmonary disease, or ventilator therapy * anemia, * pregnancy, * habitual use of tobacco/nicotine products, * known allergy to sodium phosphate (or other common laxatives), * habitual use of recreational drugs that require inhalation, * history of seizures, kidney problems, stomach or bowel problems, ulcerative colitis, problems with swallowing or gastric reflux, gout, and and/or low blood sodium. * irritable bowel * ACUTE respiratory illness such as bronchitis, pneumonia, Upper Respiratory Infection OR ACUTE GI issues such as gastroenteritis. * Anemia (as measurement of hemoglobin and/or hematocrit) . * sickle cell disease. * history of altitude sickness