Interviewers will often ask what you like to do outside of work to see what hobbies and interests you have and to gain a sense of your personality and qualities you might bring to their organization if hired. This question also allows them to see what soft skills you possess that will benefit the company. If you say that you are the captain of a sports team, that shows leadership and teamwork skills. When you describe spending time with your family, that shows you are a caring and compassionate person. Explain what hobbies and interests you enjoy doing in your spare time.