Timely death and premature death

An illustration reveals the secrets of timely death and premature death. Take a cart. It has an axle. The axle has certain characteristics for its functional efficiency and also has certain maintenance schedule. When the cart works, after certain duration, the axle gradually loses its inherent strength and finally breaks. Similar is the case with human body.
When the human body performs its activities in accordance with natural laws which maintain the life in the body, it gradually decays and finally attains its timely death. This illustrates the principle of timely death.