If you've been watching the Women's Rugby World Cup, you may have noticed players have been wearing special mouthguards that light up when they've suffered a significant knock to the head.

It's the first time these concussion-predicting mouthguards have been trialled at a major competition.

So in the wake of recent concussion concerns, from professional AFL and rugby league to community competitions, is this the future of sport?

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Featuring:

• Kate O’Halloran, digital journalist with ABC Sport 

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Women's Rugby World Cup players trialling flashing mouthguards to help predict concussions

This episode of Lab Notes was produced on the lands of the Wurundjeri and Menang Noongar people.