Tennis is a dynamic sport that requires rotation of the torso and hips to hit both forehands and backhands.  However, if the hips cannot rotate sufficiently then the lower back takes the stress anytime a tennis player hits a ground stroke. This continual stress can lead to pain and injury. In this short video from Justin Price (creator of The BioMechanics Method) learn what you can do to make sure your hips rotate correctly and save your lower back from pain when you play tennis or any other sport that requires rotation like golf, throwing a baseball or even throwing a frisbee.