The Korean national football team is getting ready for their second World Cup match against Algeria at their base camp in Foz do Iguaçu.
Korea is tied in second place with Russia in Group H with one point from a 1-1 draw against Russia on Tuesday. It will face Algeria at Beira-Rio Stadium in Porto Alegre on Sunday.
A win would mean a huge boost to Korea's goal of qualifying for the round of 16.
Belgium is currently at the top of Group H with three points.
Korean players regained some confidence in their first match given that they were going in after a demoralizing 0-4 defeat at the hands of Ghana in a friendly a week before.
"It's true that morale was low after the loss to Ghana," said a team official, "It seems the players feel somewhat relieved by their performance against Russia. It took a load off their mind."
Weather will be a tricky factor in the second match. The players will have to make a good transition from the hot and humid weather of Cuiaba, where they played their first match, to the cool climate of Porto Alegre in southern Brazil. Even in Foz do Iguaçu, it is quite chilly at night.
The morning low temperature of Port Alegre was 5 degrees Celsius on Wednesday, but this will go up to 15 degrees on Sunday. The temperature at 4 p.m., when the match kicks off, is expected to be over 20 degrees, warm and pleasant for a game of football.
The question is whether players can stay in shape with the sudden change of climate. They may find it difficult to adjust and catch cold.
Hwang In-woo, a medical staffer with the team, said, "We prepared for various types of climate of Brazil. The players will be able to handle the situation."