In a study by Danner, Snowdon & Friesen (2001) realized in 1932 it had be analyzed the health and longevity of 180 nuns. They studied their writings and how nuns reflected in them positive emotions. This yielded that the nuns who reflect this positive emotions had better health and lived an average of 10 years longer that the ones who not express emotions. 90% of the nuns of the happiest group were still alive after 85 years in contrast to 34% of the least happy group. In this study we can conclude that positive emotions promote longevity. Another study of 2282 subjects over age 65 with 2 years of follow-up reveals that the experience of positive emotions protected persons over the negative effects of aging, and most