Did you know that right now, while you are working hard in school, your bones are also working hard? They’re becoming thicker and stronger. In fact, by the time you’re 17, your bones will have grown 75 percent of their total mass. That’s why it’s so important for you to treat them right. One way to do that is to get enough calcium in your diet. This mineral plays a huge role in keeping your bones healthy and strong. Your muscles, kidneys, and blood also all rely on calcium to work properly. Learn how this essential mineral keeps you strong, and how to make sure you’re getting enough of it.