It is a team sport played on ice, in which skaters use their sticks to hit a puck into the opponent's net. It is a fast-paced physical sport. Ice hockey is most popular in areas that are sufficiently cold for natural reliable seasonal ice cover, such as Canada , the Republic, Latvia , Scandinavia , Finland , Russia , Slovakia , Slovenia , Germany , Austria , Switzerland , and the northern latitudes of the United States . With the advent of indoor artificial ice rinks it has become a year-round pastime in these areas.
In North America , the National Hockey League (NHL) is the highest level for men and both the Canadian Women's Hockey League (CWHL) and the Western Women's Hockey League (WWHL) are the highest levels for women. It is the official national winter sport of Canada , where the game enjoys immense popularity.