How is this an old mans martial arts?

[punisher73]

I've heard it referenced that way before, but not in a good way. It will turn you into an old man because of all the kicks that our body isn't designed to do long term. High number of hip/knee issues in the korean arts because the hip socket isn't designed around the motion of the kicks.

Even said that this was why they taught "cane" techniques in HKD because as you got older it was a given that you would need one.

NOTE: I am not saying the following is true, just what the reference was in saying it was an old man's art.