MODEL RELEASED. Hydrotherapy. Woman performing hydrotherapy exercises in a pool. She is being monitored by a therapist outside the pool. She is wearing floats to support her chest. The exercises are similar to those used in normal physiotherapy, but the water supports the weight of her body. Hydrotherapy is used when the limbs cannot support the full body weight, such as in patients with paralysing diseases, or those whose muscles have wasted from inactivity. Exercising in water is beneficial as the whole body can be exerted at the same time. Physiotherapy such as this can lead to increased muscle and skin tone, and greater all-round fitness.