This is the dance of the evasive. Sway left, sway right, bob up, bob down. Move the head, move the body. These are ways to avoid being struck.
However, be careful not to fall into a predictable rhythm. This is because if your opponent is sensitive to your movement he can use your rhythm against you.
For example, once you can feel the other person’s rhythm you can feint him to move in one direction so as to set him up to move in the other direction where your real attack is. Don’t you just love fast dance……..