Have you ever wondered if we can live for eternity?

We live and die. Between the two, we age. Aging is the gradual decline in the body structure and function. Eventually, the body's inability to ward off diseases results in death. In fact, humans are programmed to die! Cells reproduce by dividing , and each type of cell undergoes doublings. The amount of doubling decreases as you grow. And research has shown that if cells taken from an old are transplanted to a young of the same species, the older cells still die at the predestinated time. As the body ages heart’s performances are reduced, bones become more fragile and are more likely to break, even with minor falls, our skin wrinkles and becomes less elastic, our hair grays and thins, the body is less resistant to infection, the sense organs become less sensitive. Worse, even brain cells, which do not reproduce, will lose function with age. In the scientific aspect, we age and die. However, we also grow wiser with age and become more experienced. It's never too old to laugh, or make new friends and to enjoy the fruits of success during youth.