A hiring manager wants to learn as much about you and what you're like as a person as possible, which is why she/he wants to know what you do outside of work, in your spare time. Note: there are some activities that are better off kept private -- if you 'love to party' or 'play cards', don't mention it. However, stick to passions that are genuine and activities that may indirectly help you achieve success at work. For instance, exercise and fitness-related hobbies can demonstrate energy as well as the ability to manage stress. Volunteer work is a sign of good character and an empathetic nature. Always be prepared for follow-up questions: If you say you love golf, you may be asked what your handicap is.