Meditation is a pretty powerful tool. In high school we used to use meditation in wrestling. I remember we would do something really similiar to what we did today, and we'd imagine wrestling our opponent. At the end of the meditation my forearms, were cramping, i was sweating up a storm, and my heart was beating faster than it ever has before. I guess it's because our brain doesn't distinguish something we really imagine mentally and something we do physically. Basically, i love doing that meditation stuff, and class was pretty kick ass today.