The document summarizes several physical laws and health benefits of aquatic exercise environments. Water temperature between 83-86 degrees facilitates heat dissipation and prevents overheating. Water provides resistance through viscosity and drag on moving limbs, with resistance increasing based on speed and direction of motion. Buoyancy decreases the effects of gravity and reduces weight bearing on joints. Regular aquatic exercise can increase respiratory, cardiovascular and muscular fitness as well as bone density and flexibility, and may help reduce symptoms for several populations including older adults, those with cardiovascular or pulmonary conditions, and pregnant/postpartum individuals.