A good background story of your persona is a step forward to getting a better understanding of your users.

• What interests and hobbies do they have?
• What time do they usually wake up?
• How does their average day go?
• Do they prefer coffee or tea, dogs or cats?
• Do they live alone or share an apartment with a friend or family?

Try to think of anything that might give you insight and make a difference in product behavior and functionality. For example, if you're creating an app for renting housing, you might want to indicate if your persona has pets, smokes, or works odd hours. Avoid irrelevant details that may cause cluttering and confusion.