The Triple Torso Twist can be used by up to three individuals at once, and is a great way to strengthen the abdominal muscles. Having strong abdominal muscles have been proven to improve posture, and help reduce the risk of lower back pain. Abdominal muscles also play an important role in everyday tasks, so strengthening them will make everyday activities – like cleaning, gardening, cooking, and lifting objects – easier. The Triple Torso Twist is made from commercial grade material, making it perfect for use at outdoor parks. It is meant to be used by individuals who are 13 years of age and up.