This is one of my favorite core exercises to build real rotational strength for baseball and softball players. We use the GHD Rotational Sit-Up with a med ball to teach the torso how to create torque the same way it does in a swing. By extending the med ball over the opposite shoulder, the athlete loads the obliques, lats, and deep core—then rotates powerfully through the trunk, just like the mechanics of a high-velocity swing. This teaches the core to transfer force from the lower body through

12 Best Rotation and Anti-Rotation Exercises for Functional Core Strength