활 (Joy) is a fundamental human emotion characterized by feelings of happiness, contentment, and pleasure. It often arises from positive experiences, such as achieving goals, spending time with loved ones, or engaging in enjoyable activities. Joy can enhance overall well-being and contribute to a more fulfilling life. In various cultures, joy is celebrated through festivals, music, and art. It plays a significant role in mental health, as experiencing joy can reduce stress and improve mood. Activities that promote joy include exercise, hobbies, and social interactions, all of which can foster a sense of connection and satisfaction.