If they're hardcore enough to shrug off menses, a fall like that is like plucking a nose hair.

That was actually pretty tame by the standards of these things. I was expecting much worse (but was glad my expectations went unfulfilled).

In junior high, while we were taking gymnastics, our teacher insisted we remove glasses while using the equipment. My spotter on the balance beam decided talking to someone else while I was doing the test routine was more important than spotting. We had a routine that ended with a stride, stride, stride dismount. I unfortunately started too far from the back end of the bar and the third stride took me headfirst over the end of the beam (without my blasses, the beam blended into the floor somewhat badly...)

I got mildly concussed, hitting that floor was harder than any time I ever got pitched off a horse (I learned to ride and rode hunter/jumpers until after I got out of high school). My spotter got an F for the whole gymnastics sesson. (I always got a reasonable grade in phys ed because all my instructors realized I was trying my best despite the fact I'm not always that coordinated -- I can throw well, for instance and catch too, but I can't run for sh!t.)