Just as it does with humans, swimming provides a good workout, requiring additional cardiovascular exertion due to the hydrodynamic pressure on the rib cage and lungs. Since the lungs must work harder to deliver enough oxygen to the muscles, this fosters strengthening of the heart and lungs--without the concussive pounding on limbs and joints that would be experienced during land-based training or rehabilitation.

And while horses may seem unlikely candidates for a refreshing dip, swimming programs are respected and effective methods of rehabilitation and conditioning for equine athletes. A non-concussive form of therapy, swimming is especially good for rehabilitation of horses with limb diseases such as arthritis, acute or chronic laminitis, splints, curbs and bruises. Hydrotherapy also serves as a valuable final phase in post-operative rehabilitation.