Maintaining good health doesn’t happen by accident. It means keeping physically active, making smart lifestyle choices and getting an occasional checkup and test. But staying healthy can also be fun. This was amply demonstrated at the 2017 NBC4 Health and Fitness Expo, which took place Jan. 7 and 8, at the Walter E. Washington Convention Center in Washington, D.C. Now in its 24th year, the event was attended by an estimated 85,000 people, who took part in a variety of activities and received free health screenings and information on products and services related to healthy living. A full lineup of NBC4 anchors and reporters, plus celebrity guests, were on hand to sign autographs.