Having spent time in the ER after my kid had a 16-foot fall during parkour, and having gotten dinner-plate-sized bruises myself, I can confirm that it’s dangerous. (The kid in question did continue lessons after that.) Find a local parkour gym where she can learn proper skills and how to do it as safely as possible, then cross your fingers and hope for the best. Sometimes kids get into dangerous activities and that’s just how it is; they’ll do it whether you want them to or not, so go for a harm-reduction approach.
no subject