What are the benefits of using workout dvds such as zumba fitness? do they help u lose weight?

Can help: Anything that will help you exercise whether it be a dvd, zumba class or a trainer are all positive motivators if you do regular exercise especially of the aerobic variety you will ultimately lose weight assuming your diet remains constant.

Many, and Yes: Zumba specifically contributes to aerobic and core fitness, especially if done consistently and with good form. Adequate rest, hydration, attention to caloric input and nutritional support (macro and micronutrients) are critical to achieving the success and weight loss you want. Regular exercise alone, in the absence of recovery and nutritious, well-timed meals, won't be enough to get you there!