Ps: gorilla warfare
There's an important lesson here on guerrilla warfare (meditators looking to add to their bag of tricks to improve pliability and flexibility).
Split squats have been around forever.
I dismissed the exercise, thinking it's just for muscle heads trying to get big muscular legs and toned butt.
And I dismissed the wushu martial artists version in Jade's video, because that crowd, like gymnasts and contortionists, practice extreme and dangerous methods to gain super flexibility.
But all these years I missed out the fact, had I not experimented with it sooner is if you tune the exercise just right, it's great for stretching many parts of the leg and thigh quickly, in one exercise (whereas normally you need 4 or 5 exercises to stretch all parts of the leg).
So the lesson as always, it's NWBH.
It's not what you do, but how you do it that determines if something is useful, safe, or dangerous.