Scuba diving can significantly affect the human body due to pressure changes and the underwater environment. As a diver descends, the pressure increases, which compresses the air they breathe. For example, at just 33 feet deep, the volume of air in a diver’s lungs is halved. This means that if a diver holds their breath while ascending, the air can expand and cause injury. Additionally, divers must consider how water’s conductive properties impact their body temperature, leading them to wear wetsuits for insulation.