There are few people who can live longer than 70 years old. As it is recorded, there are only 37 people alive who were born in 1800’s; they have lived in three different centuries. But how can we have this life span seem or feel longer? In other word, why does time fly by as you get older? It is all about your life style and the experiences you have had! As more novel things you do and things you see and the places you visit and people you meet, the slower time feels. And that is because your brain is putting in all these new details!