Exercise is a very common and non-invasive method of treatment used in a physical therapy setting. Exercise can help to improve a patient’s strength, flexibility and range of motion, and can help a patient regain their functional and mobile independence. Exercise is almost always incorporated into a physical therapy program, and usually involves activities that the patient will be instructed to perform at home on their own, in addition to the clinical setting with a therapist. Exercises can fall into several categories, most commonly passive, active, or resistive. Passive exercises are manual procedures carried out by the therapist with no active effort from the patient. Active exercises are movements performed by the patient independently or with manual or mechanical help to increase joint mobility and prepare for more dynamic exercise. Resistive exercises are performed by the patient to increase muscular strength, using body weight, externals weights, resistance bands, or exercise machines, or a combination of these different types.