The message is clear, finding purpose through work or volunteering, staying connected with others, and continuing to learn lead to a longer, healthier, and happier life. In one study, participants showed a reversal of three years of aging over two years of volunteering. Read more about how companies are adapting to incorporate more older workers and the transformative effects of helping others (for both the person giving and the recipient). Read: What is the ideal age to retire? Never, according to a neuroscientist