Oxygize It’s time to take control of what you breathe with Oxygize! A few deep breaths of this pure oxygen and you are all fresh and energetic. Health status, activity level, and hydration are factors that affect how much oxygen a person needs. Cellular respiration is the term used to describe the phase of the digestive process when food breaks down to supply cells with energy. Oxygen deprivation doesn’t have to be sudden, like choking or drowning, to be a problem.