In a 30-day research experiment, students were divided into three groups. One group did not practice the game of Basketball, the second group practiced on playground, and the third group practiced only in their mind for one hour daily. The results: the group that did not practice did not improve. The group that practiced improved 24%, and group that practiced only in mind improved 23%. This experiment showed that practicing in your mind alone improves sports performance almost as much as doing real practice.