How many calories can you burn in SIZZLE / ZUMBA?

It depends on many factors, but mainly on how intensively you are doing the class. There is no pressure in our classes, so you decide how hard you want to go.

According to MyFitnessPal, with a 45 minutes Zumba class, you can burn anywhere between 350-600 calories.

Sizzle would be very similar to that.