FIFA has introduced three-minute hydration breaks for players in each half as a welfare measure for the World Cup. A study by US broadcaster National Public Radio this week found that more than a third of matches this tournament are at high risk for dangerously hot, humid conditions. Temperatures in Miami, Houston, Dallas and Atlanta can average as high as 29 degrees celsius. Scotland will play Brazil in Miami. #skynews #sports #football #worldcup SUBSCRIBE to our YouTube channel for more