Cardiorespiratory fitness

Cardiorespiratory fitness means how well your heart and lungs work together to give your body the energy it needs to do things like run, jump, or even just walk to school. Your heart is like a pump that sends blood all around your body, and your lungs are like balloons that fill with air when you breathe in.

When you exercise, your heart and lungs work harder to send more blood and oxygen to your muscles, which helps them keep going without getting too tired. This is why it's important to do things like running, biking, or playing sports, because it helps make your heart and lungs stronger.

People who are more cardiorespiratory fit are usually able to do more physical activity without feeling tired or out of breath. Plus, it's good for your overall health to keep your heart and lungs in shape!