jamnastics is an organization based in Cambridge that has something to offer for the whole family. they offer dance and gymnastics classes for kids as young as two all the way through adults. They have after school/performance programs for children as well as a latin dance troupe for adults. The kids that perform hip hop with jamnastics are sick, and will definitely go places. They use the gym at MIT as their home base for most of their gymnastics classes which gives them access to the equipment there and the trampolines which are a lot of fun.