Do you have zumba 2? I have zumba 2 for the wii. I love it. I sometimes do it as my main exercise but some days I focus on other things and do a little less. I do anywhere from 20 min. to 60. With it being so hot and not wanted to be outside walking, I've been doing 60 lately.
How long have you been doing it? I've been doing it for about a year and a half but I also have the 7-set Zumba DVDs.