CrossFlowV: Improve Your Swing Flow. 32 minutes. Feel and see the difference. Maximize your range of motion to give more yardage to your drive and / or more power to your serve; enhance your game. If you play swinging sports such as golf or racquet games, yoga moves can increase your range of motion. This routine works on hip and spine flexibility; ankle and knee stability; and core, arm, as well as hamstring strength- all of which can enhance your overall game. Yoga blocks recommended. All levels.