Duration: 04:36 | Mastering any physical skill takes practice. Practice is the repetition of an action with the goal of improvement, and it helps us perform with more ease, speed, and confidence. But what does practice actually do to make us better at things? Annie Bosler and Don Greene explain how practice affects the inner workings of our brains. [Directed by Martina Meštrović, narrated by Addison Anderson, music by Wonder Boy Audio].