Hydrotherapy allows for more exercise than on land because:

• A. Buoyancy supports body weight and reduces joint load
• B. It increases joint load
• C. Water reduces blood circulation
• D. It warms the water

Answer: (A)

Hydrotherapy lets you do more exercise because buoyancy supports body weight, reducing joint load. When you’re in water, the water’s upward thrust lessens the effective weight you bear, so joints such as knees, hips, and the spine experience less compression and impact. This makes moving through a full range of motion and sustaining activity more comfortable, letting you work longer and harder without the same pain or risk as on land. The water also provides resistance, which strengthens muscles, but the key factor enabling more exercise is the reduced joint load from buoyancy. The other options don’t fit because increasing joint load would hinder exercise, water circulation isn’t reduced by being in water, and warmth helps comfort and flexibility but isn’t the main reason you can exercise more in hydrotherapy.