Xbox Kinect Zumba

I've just bought Zumba on Xbox Kinect, it's great fun but incredibly hard! (It probably doesn't help I'm incredibly uncoordinated... ) Is anyone else doing this?

I downloaded the preview on xbox and liked it so buying it on monday. I think its like other games such as dance central which are tricky to start with till you learn the routines. So keep it up, even if your movements are not perfect your still burning calories!

I've had it since Friday now and have played it twice a day since! I can feel my muscles aching and sweat pouring off, which can only be a good thing...