Knowledge_Seeker said in forum #414488:
I don't like this alias not because of some qualifier nonsense, but because I personally think the original tag is unambiguous as is. A "plank" could refer to an object (usually made of wood) or the exercise, but planking could only refer to the exercise, meaning it's unnecessary to qualify it like this.
There's also a fad called "planking," though it should be covered by face_down on_stomach unless there's any posts specifically referencing the fad.
Also, this is just my personal experience, but I don't remember seeing anyone refer to the exercise as "planking." Adding an exercise qualifier would make it more intuitive, especially for users that never set foot in a gym or exercise class.