Head change

At times today I had a very strong feeling that in my left tongue mode I had a completely different use of my head as I turned it form side to side. It is hard to explain but there was an equality between the left and right side musculature running down the posterior spine and under my chin of all places. There is a feeling of a positive tension throughout but the balance of the head seems to recruit both sides instead of tension on the left with the right more free. It feels a little more difficult to use the left tongue but also more defined.