 There were a few different research studies and I reference them in the book. The one that I liked the most from a visualization standpoint was they took three different groups and they were gonna have them shoot free throws. These were just regular weekend warriors. And then the three groups, the first group, they got tested on the first day and then they practiced for 21 consecutive days and then they took to retest 21 days later. Second group took the test on the first day, did not touch a basketball, but only visualized making free throws for the next 21 days and then took to retest. And then the third group tested on the first day, didn't practice and didn't visualize and then retested on the 21st day. I think most people would realize the group that didn't practice or visualize, there was no improvement. In fact, they had a slight decline in their ability. But the part that blew my mind was the group that visualized was only a couple of percentage points less than the group that actually practiced. So by actually sitting with your eyes closed and visualizing making free throws, it's almost as good as being able to practice. And that blows my mind.