During an interview, it's important to remember that the interviewer is interested in getting to know you as a person, not just your professional qualifications. They may inquire about your hobbies and interests to gain insight into your personality and determine if you'd be a good cultural fit for the company. By discussing your free time activities, you can showcase your time management skills, creativity, stress reduction methods, and commitment to personal growth and development. However, since you are interviewing for a position with such a prestigious hospital, be sure not to mention activities that may be deemed unprofessional.