What happens as we age?

As people age, skin may begin to sag and wrinkle, and hair may turn thin or gray. Over time muscles become less strong and flexible, and bones may become more brittle and breakable. Blood may not flow through the body as well as it once did, which slows the activity of the brain and the senses. The immune system becomes weaker and does not fight off sickness as well as before. People experience these changes at different ages, but all will grow old as they near the end of their life cycle. It may seem sad that a person has grown old and cannot do all the things they once did, but try to look at it this way: When people grow old, that means they have been lucky enough to avoid things like accidents and diseases that could have cut their lives short. And better yet, regardless of the physical changes of old age, many people remain healthy and lead full and happy lives.