oxygen uptake

Oxygen uptake refers to the process by which our bodies absorb oxygen from the air we breathe. This oxygen is essential for the production of energy in our cells, allowing us to perform daily activities and stay healthy. During exercise, our muscles require more energy, so our oxygen uptake increases to meet this demand. It is commonly measured during fitness tests to gauge cardiovascular health and overall fitness levels. Higher oxygen uptake generally indicates better fitness and the body's ability to efficiently supply energy during physical activity.