Fleischman's privileged life likely helped her reach 100 in good health, and genetics probably played a part, too. Here are three habits Fleischman has kept up across her life that may have helped her reach triple digits. BI's Gabby Landsverk recently reported on some of the best exercises for longevity and balance that don't require a gym. One 2019 study found that women who had an active social life were 41% more likely to reach age 85 than those who were isolated. Fleischman, who calls herself a "professional volunteer," has been doing so her whole life, and says that helping others "gives her pleasure."

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Persons: —, Barbara Fleischman, Lawrence Arthur Fleischman, Fleischman, Kennedy, Johnson, I've, she's, She's, Gabby Landsverk Organizations: Service, Juilliard School, New York Public Library, American, Smithsonian Institution, Metropolitan Museum of Art, Business, United Nations, Sunrise, The New York Public Library, Carnegie Hall, Juilliard, Centers for Disease Control Locations: Detroit, New York City, New York, East