What is a good oxygen level? “Normal people who have working lungs, and all those steps are going well, their blood oxygen level will usually be 96-100 percent,” adds Dr. Uppal.

A normal resting oxygen saturation level for a healthy person at sea level is usually between 95% and 100%. This means your organs and tissues are receiving enough oxygen to work as they should.

It is the level of oxygen-saturated hemoglobin in correspondence to total hemoglobin in the blood. Maintaining a balanced and normal blood oxygen level is crucial to both adults and childrens.

The brain relies on continuous capillary flow to meet its high oxygen demands, but these vessels are prone to brief stalls ...

If apps can’t tell when oxygen levels are actually low, they could give a false sense of security to people who also feel okay. “This thing could read normal, but you could not be normal ...