The heart’s main job is to pump blood 🚀. Blood carries oxygen and nutrients, which are super important for our bodies to work! When the heart beats, it pushes blood out through a big artery called the aorta. From there, blood travels to every part of your body, delivering oxygen and picking up carbon dioxide. When blood returns to the heart, it enters the right side, goes to the lungs to get fresh oxygen, and returns to the left side to be pumped out again 💨. This journey is called the circulatory system and keeps our bodies alive and healthy!