Players at the upcoming Women's Rugby World Cup will sport high-tech mouthguards that light up red when they suffer heavy head impacts, in a move aimed at improving player safety and reducing concussion. https://www.japantimes.co.jp/sports/2025/08/12/more-sports/womens-rugby-smart-mouthguards/?utm_medium=Social&utm_source=mastodon #moresports #women039srugbyworldcup