In a boxing gym in my twenties, couple years in, never really skipped rope, didn't care much for it, wasn't much good at it, didn't have time for it, doing too much training in karate and boxing.
An old guy, in his seventies, used to hit the speed bag, never saw him do anything else, never really spoke with him other than a "hi" while walking to the locker room.
One day he says, "Boy! You, Karate boy!" I said, "Yes, sir?"
He says, "How come you never do any rope work? Never warm up with it? Do you know how?"
I'm thinking, oh boy, here we go, he couldn't just leave me alone. But I wanted to be polite, so I listened, hoping he would be brief. He wasn't.
He started to teach me how to skip rope. He said he didn't do it any more, he had trouble with his feet.
After a few months I could skip rope like a MF'er. But, more important, he taught me where to go from there, to improve and broaden my skills to higher levels. He taught me "the rhythm of the rope", forwards, backwards, sideways, it was all the same rhythm of the rope. After a year (and he was no longer there) I could skip rope as well as anyone I've ever seen. And it was the best warm up I had ever used. Used it for damn near forty years. But more important, he taught me how to teach others the rhythm of the rope. I can teach the most uncoordinated, out of shape, clumsies how to skip rope, and I have, repeatedly ever since. It's might be my best teaching skill.
And I never once saw him skip more than two or three slow steps at a time. Honest to God.