The Open Book exercise is a mobility movement designed to improve thoracic spine rotation and stretch the chest.

• Lie on your side with your knees and hips bent at 90 degrees (fetal position).
• Extend both arms straight out in front of you, stacking your palms together.
• Keeping your knees glued together and firmly on the floor, lift your top arm and rotate it up and over to the other side.
• Follow your moving hand with your gaze, allowing your upper back to rotate.
• Try to touch your shoulder to the floor on the opposite side while keeping your hips stationary.
• Hold for a second at the end range, then slowly return to the starting position.