 And I went down to a group of neurology trainers in Phoenix. And for the six months before I went and met with them, I hadn't been able to do more than one push-up without pain. And I did about 20, 30 minutes of drills with them, and most of them were vision drills. And all of a sudden, I was able to do 20 push-ups without pain. And it didn't make any sense to me, but I was happy.