The majority of residents in Okinawa, Japan who are over the age of 100, have both a Zen garden and a vegetable garden. This hobby seems to be common practice in other places around the world among people who enjoy a long lifespan (Sardinia, Italy – for example). While this theory is mainly comparative, one cannot deny that it forces you to step out and get some fresh air and sunlight, as well as enjoy organic vegetables. Undoubtedly these factors contribute to longevity.