It's not very intense to have classes indoors.

Ballroom dance is an international ballroom dance originated from the west, also known as ballroom dance, party dance, ballroom dance and ballroom dance. Originated in Europe, it evolved on the basis of ancient folk dance. Since 16 and 17 centuries, ballroom dancing has become a common social activity in European countries, so it is known as the "world language". After the 1920s, ballroom dancing became popular all over the world, so it was also called "international dance".