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 videos: http://www.youtube.com/skynews Follow us on Twitter: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow us on TikTok: https://www.tiktok.com/@skynews For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB Listen to our new podcast This is Why, available for free here: https://podfollow.com/thisiswhy To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales