He was wearing a bright green t-shirt, a marine blue baseball cap, black shorts, sneakers with neon green accents and a goofy grin. Flailing his arms wildly above his head and then to the side, he was doing his best to keep up with the rest of us in Zumba class. It wasn’t the speed that was a problem. He was able to move quickly, even though his motions were more choppy than smooth. The problem was the variety of combinations. His brain clearly couldn’t process the mixtures of arm and leg movements, or the mishmash of turning one way and then the other in four-count sets. And the hips?…
