The chronic health woes of the Bronx, the borough with the highest rates of diabetes and obesity, are usually blamed on diet. But soda isn’t the only determinant of health; sit-ups matter to. City Limits’ 2014-2015 Bronx Investigative Internship Program looked at how access to private gyms, bike lanes and physical education in schools affected the borough. The work was generously supported by the Simon Bolivar Foundation.