A hitting extension for a body-positioning trainer is disclosed. The hitting extension has an elongate, generally flat body with first and second ends spaced from one another. The second end terminates in a rounded distal edge. A first opening formed in the body proximate to the first end allows the hitting extension to be connected to the body-positioning trainer. The body-positioning trainer restricts the movement of the arms in order to allow the user to focus on torso movement, and the hitting extension allows the user to hit a ball, or another such projectile, using the trainer. Methods for training a user in torso movement using the hitting extension are also disclosed.