. "Her SPJones Fitness Plus offers Pilates, step aerobics and other classes, but it???s Zumba that has captured her clients. ???I was doing it a little bit before, but after I got certified as a teacher, I pretty much jumped right in,??? says Jones, who teaches at several locations, including Christina Cultural Arts Center in Wilmington. ???If you want to begin exercising, the first step might be to" . . . .