As evidence builds around the long term impact of repeated head knocks in sport, sporting codes are putting in place protocols to protect players. There are a lot of opinions about all of that and it's likely to be an ongoing issue. So in this Squiz Shortcut, we take a look at what the science says about head knocks and injuries, and what it means for athletes and sport.  Squiz Shortcuts is the backstory to the big news stories.Squiz recommends:Reading: The Australian Sports Brain Bank website. The ASBB was established in 2018 by the Neuropathology Department at RPA Hospital Sydney in partnership with the Brain and Mind Centre at the University of Sydney, and the Concussion Legacy Foundation in the USA.https://www.brainbank.org.au/Watching: Concussion. You can catch it on Stan or Amazon.https://play.stan.com.au/programs/1098344https://www.amazon.com/Concussion-Will-Smith/dp/B01AB6PODK See /privacy for privacy and opt-out information.