oh oh, your on FCS!! Awesome....welcome aboard!!! You'll be racking up the km's in no time!

Zumba is apparently great for beginners, and honestly RPM (similar to spin) is a class you can tailor to your fitness levels too. Attack can be done at low impact levels thru out the entire class, but I'd recommend to give the instructor a heads up prior to the class just so they know to give you the low impact options (which they should anyway, but some skimp on those additional instructions).