I just got finished doing what I consider to be the absolute best Zumba fitness work out on YouTube! It was absolutely amazing and fun!! I was drenched in sweat by the end of the video and had to stop several times to catch my breath but it was still fun :) The advertisements are true ,it works everything shoulders, arms, back, definitely the legs. Gravity works the heck out of your arms. Check out the video below it incorporates reggae, salsa, and hip hop music. Until the next post, I wish you all peace and light.