Ok kiddo, the heart is like a pump that helps move blood around your body to give oxygen and nutrients to all your body parts. But sometimes, this pump can get weak or not work properly. This is called heart failure.
When your heart is not working well, it can cause some parts of your body to not get enough oxygen and blood. This can make you feel weak, tired and short of breath. It can also cause swelling in your ankles, legs, and belly because the fluid that usually gets pumped out by the heart can build up in these areas.
There are many reasons why your heart may not work properly, including high blood pressure, a heart attack, valve problems, or even just getting older. Sometimes, people may need to take medicine or have surgery to help their heart work better. It's also important to stay healthy by eating healthy foods, staying active, and not smoking.
Remember, it's important to pay attention to your body and tell your grown-ups if you notice any changes. They can help you get the help you need to keep your heart healthy.