A "챌린지 (Challenge)" refers to a task or activity that requires effort and determination to complete. It often involves setting specific goals, overcoming obstacles, and pushing personal limits. Challenges can be found in various areas, such as sports, academics, or personal development, and they encourage individuals to grow and improve their skills. In recent years, social media has popularized various types of challenges, such as the Ice Bucket Challenge or fitness challenges. These often involve sharing experiences online, motivating others to participate, and raising awareness for specific causes. Overall, challenges can foster community engagement and inspire positive change.