Finally got to hit my first bucket in the great White North and I got to take out all my new release golf knowledge out on some dormant range balls. Anyways, after the first few swings I was hitting big hooks with all clubs. After a few adjustments I got to hitting with the feeling of "pulling up and in". This straightened me out and I was hitting bullets but all of a sudden I felt a huge strain in the muscles on my left side. Then I thought of Brians short video where he is sitting in a swivel chair and he talks about the stomach muscles in his left side contracting. Has anybody else felt this in their foray into New Releasing? or am I doing something waaaaay wrong? I am not injured or anything but I am sore today as I don't think my stomach has ever been used this way in the golf swing. Thoughts?