The document discusses various winter sports popular in the Czech Republic, including ice hockey, snowboarding, ice skating, snowtubing. It notes that ice hockey is divided into three periods of 20 minutes each. Snowboarding is popular in the Krušné mountains, which have several ski slopes. While ice skating is usually just a holiday activity in the Czech Republic, the country has won medals in the Olympics in ice skating. Snowtubing can be found at mountain resorts.