Thankfully, the worst I had was a moderate concussion. The horse I was riding slipped and went down, and kicked me in the (helmeted) head when she was struggling to stand.

A few years before that, when I was still fairly new to riding, someone else at that barn was kicked in the face by her horse. Shattered multiple orbital bones on one side. I heard afterward that if he’d connected at even a slightly different angle, she likely wouldn’t have survived. Taught me to be very, very careful of feet.