When Fitbit launched the Charge 4 fitness band, one of the features we found the most interesting was its ability to estimate users' blood oxygen saturation levels through its SpO2 monitor. Users ...

First, pause and take a deep breath. When we breathe in, our lungs fill with oxygen, which is distributed to our red blood cells for transportation throughout our bodies. Our bodies need a lot of ...

Respiratory desaturation, known as hypoxemia in medical terms, is when you have low blood oxygen saturation. Your blood oxygen saturation is a measure of how much oxygen is in your blood. A normal ...