I move with the grace of a geriatric walrus with two left flippers. What am I doing with a dance/exercise fusion fitness thing? Unlocking achievements, while shaking my stuff is what. Well, OK, there ...

Svaja Mikulionis taking part in a free Zumba class on Monday, July 1, 2013, at Rosa Parks Circle, in Grand Rapids, Mich. (Latara Appleby | MLive.com) GRAND RAPIDS, MI -- It’s time to shake those hips ...