Popular Science – 10/25/17 , by Nicole Westman
In Canada, many kids are on ice skates before they can walk. But they don’t get to start slamming into each other until they’re around 11, when they can sign up for full contact hockey. Unsurprisingly, that’s also the age when the baby Wayne Gretzky’s start getting their first concussions.
If they take a knock, the puck-hungry preteens are sidelined until they pass through a standard return-to-play protocol: after the initial symptoms subside, the recommended approach is for athletes to gradually ramp up activity, making sure headaches and dizziness don’t return at each step of the way.