Aging is the process of getting older. Everyone ages, but it happens at different speeds. As you get older, it means your body changes in different ways and you don't look or feel the same way you did when you were younger. You might grow some gray hairs, wrinkles, or have different aches and pains that you didn't have before. Some people might feel older than they are because their bodies changed and don't work as well as when they were younger. Aging is a part of life and nothing can stop it, but you can take care of yourself and make sure your body stays healthy and strong.