Students might assume that all computer scientists want to program 24-hours a day and have only stereotypical hobbies. Even if you fit these stereotypes, the field doesn’t require these things. Make sure students see that you have other interests to help them understand that regardless of their interests they can become computer scientists.
Example: "For fun I like to watch movies!"
See this and related tips as a Tip Sheet: http://csteachingtips.org/Tips-for-classroom-volunteers