Free health screenings, including blood pressure checks, body mass index calculations, cholesterol testing and more, will be available to the public Wednesday. The Greater Hall Chamber of Commerce will host its annual HealthSmart Breakfast and Expo on Wednesday from 7:30 a.m. to 1:30 p.m. at the Gainesville Civic Center. Beginning at 7:30 a.m., the public can take part in the expo and receive information from nearly 60 wellness vendors.