Provoking step and neck

Yesterday I was doing the exercise with the stick where we do the provoking step and chamber and then step back and switch sides and repeat. I didn't notice the feeling while doing the drill but after I stopped I felt like my neck in the front and around the collarbone area felt like it had been worked or stretched out a bit. But today I am feeling some soreness in the back of the neck around the c6-c7 area. Just wondering if that is something expected. I thought the provoking step was about the breast bone and ankles and the chambering about pulling the breast bone back to the center.