A、By increasing the flow of blood. B、By taking in more nutrition. C、By digesting food more quickly. D、By using energy in our bod

Exercise improves your energy levels by increasing the flow of blood to the heart and blood vessels. One of the main reasons people exercise is to control or reduce their weight. Physical activity burns calories—the energy stored in food. The more calories you burn, the easier it is to control or reduce your weight.
    Dancing can be a fun way to exercise. This is especially true for those who see exercise as a necessary evil: something they should do, not something they want to do.
    A dance-fitness program called Zumba has grown in popularity in recent years. Zumba is said to be one of the fastest-growing group programs in the physical fitness industry today.
    Alberto Beto Perez created Zumba in his native Colombia in the 1990s. His dance-fitness program is based on salsa, meringue, and other forms of Latin American music. Mr. Perez brought the program to the United States in 2001. Since then it has spread around the world.
    The Zumba website says its classes are now offered in more than one hundred thousand gyms, fitness studios and dance clubs around the world. That is up from about 2000 locations in 2006. The website also says that more than twelve million people now attend Zumba classes in 125 countries.
26. Q: How does exercise help to improve energy levels according to the passage?
27. Q: What do we know about Zumba ?
28. Q: What do we learn about Alberto Beto Perez?
29. Q: What do we know about the prospect of Zumba?