This question offers insights into your personality. The interviewers want to determine whether you're a well-rounded individual with an interest in the world around you or if you're a one-dimensional want-to-be doctor. Having interests beyond the medical field will help you be a more empathetic care provider who will potentially have more highly developed communication skills. It will also offer insights into how balanced of an individual you are. Having interests outside of your profession will help you manage your stress levels, contribute to your productivity in your studies, and prevent you from burning out. Take this opportunity to share your interests or hobbies. It has the potential to strike up meaningful conversations and make you a more memorable applicant.