Yes, before you comment, I know: "practice, practice, practice!"
I have been, haha, and my rolls have gotten a lot better than when I first started. However, I can't seem to roll on concrete correctly. My form feels right, but I can feel my vertebrae crunching along underneath me. Besides that, I feel perfect, but it's still quite a hindrance!
Has anyone else struggled with this? How did you get over it?
Thanks!