Health experts have said that with the rise in popularity of marathons, triathlons and extreme obstacle races, many people at risk of major injuries: http://trib.al/UMwvuc6SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynewsFollow us on Twitter: https://twitter.com/skynews and https://twitter.com/skynewsbreakLike us on Facebook: https://www.facebook.com/skynewsFor more content go to http://news.sky.com and download our apps:iPad https://itunes.apple.com/gb/app/Sky-News-for-iPad/id422583124iPhone https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GBDid you miss our previous article... https://sportsvideos.club/extreme-sports/extreme-sports-fail-compilation-1-mpora
