When Rebecca Loy’s family relocated to Denver, researching neighborhoods was key before setting up a new life for herself and her family. Loy’s method? Lace up her running shoes, buckle daughter Jessica into the jogging stroller and hit a few Stroller Strides classes, the franchise exercise program where moms get a 60-minute workout while pushing their kids in the stroller. In fall 2008, she found two options: one in a south suburb and Erin Johns’ workouts in Stapleton. “The first thing I did when I knew we were moving was search online for Stroller Strides,” says Loy, a 27- year-old mother of two, who attended classes in Knoxville, Tenn. “Once I got to class I met all these great women — including Erin — and that had a lot to do with choosing Stapleton....