Ozone for healthy people

Have been doing research on ozone, but have one major question that is bugging me. If your blood oxygen levels are already considered normal, like in the 95-98% range, is the goal to get the blood oxygen saturated to 100% or does the blood actually accept higher concentrations of oxygen than what is considered normal. I think part of the basis of this question is whether or not ozone could be considered useful for people who are already considered healthy or would its main purpose be for those who have some kind of disease. Thanks much for any help-