We would like an article that explains the risks associated with heading the soccer ball and its co-relation with Concussion. The article should talk about the ages it is appropriate to do so and reference any soccer stars that have suffered concussions from repetitive heading of the soccer ball. Here are a couple of articles and the Concussion guidelines for Soccer Canada https://www.sciencedaily.com/releases/2018/04/180424112923.htm https://cosmosmagazine.com/biology/in-soccer-heading-the-ball-carries-greatest-risk-of-concussion https://www.canadasoccer.com/files/ConcussionGuideEN2.pdf