Zumba really burns the calories and I have to laugh at myself when Sonia teaches us something new. But guess what, others are struggling to learn the new moves too and they don't even notice when I misstep. It is so much fun and I am soaking wet when finished so I know I have burned calories. I go straight to the treadmill when Zumba is over and walk for 30 minutes. It feels good to know you have done the right thing.