I thought that all Cubans were genetically modified and could dance salsa as soon as they could stand. I was wrong, they do take lessons too, at least in Cienfuegos as I could witness through the windows of an academy.
Anyways, rythm is for sure part of their blood. (click on picture for high res)
Leica M8 with 35mm Lux Asph at F1.4, 1/250, ISO160