I can't explain this one very well. I basically started the run with the mindset of not caring. I didn't care how my body felt or if I was hurt or if I was running the right way or if I was going too fast or too slow. I just ran. I kept telling myself to run easy and smooth, smooth and easy. Let your free wheeling mind determine the correct combination of the million different body variables. I did not consciously try for this 10K PR, but I guess all that smooth and easy action added up to shaving 26 seconds off my PR.
My new 10K PR is 47m 53s (7:44/mile pace).