Mercey Livingston is a health and wellness writer and certified Integrative Nutrition Health Coach. She's written about fitness and wellness for Well+Good, Women's Health, Business Insider, and ...

Oxygen is absorbed by a protein in your blood called hemoglobin. When you breathe, your lungs load up blood cells with oxygen, then the pumping of your heart circulates the oxygen-rich blood through ...

Smartwatches can measure everything from heart rate to sleep quality, but one health metric has become particularly relevant over the past two years: blood oxygen saturation. Two of the world's ...

Apple with the Apple Watch Series 6 introduced a new feature for monitoring blood oxygen level, using the LEDs at the back of the Apple Watch to determine the amount of oxygen in the blood. A low ...

In iOS 26.4, Apple added an Average Bedtime metric to the Sleep section of the Health app, letting users better monitor how ...

Oxygen levels in the Earth's atmosphere are likely to have 'fluctuated wildly' one billion years ago, creating conditions that could have accelerated?the development of early animal life, according to ...

A new study suggests that some of the world’s oxygen-deprived oceans could eventually regain higher oxygen levels in the ...

For centuries, it was believed that the production of oxygen relied on one component: photosynthesis (the conversion of light energy into chemical energy). Plants and algae use sunlight to convert ...