A man's age no longer tell you anything about his social position, marriage or healthy. There' s not a particular year which one goes to school or goes to work or gets married or start a family. The social clock that kept us on time and told us when go to school, get a job, or stop working isn't as strong as it was used to be. It doesn't surprising us to hear a 28-year-old university president or a 35-year-old grandmother, or 70-year-old man who has become a father for the first time. What we all know, public's ideas are changing nowadays.