What impact does reduced nitrogen absorption from EANx have on divers?

Using EANx (Enriched Air Nitrox) during diving reduces the amount of nitrogen absorbed by the body compared to standard air. This reduction in nitrogen absorption directly affects the risk of nitrogen narcosis, which can impair a diver's cognitive function and physical coordination at greater depths. By using a gas mixture with a higher proportion of oxygen and lower nitrogen content, divers experience a decreased likelihood of narcosis, particularly at moderate depths.

While the other options describe potential benefits or changes associated with diving, they do not accurately reflect the primary physiological impact of reduced nitrogen absorption. For instance, increased energy levels can be subjective and may vary among divers; deeper dives without additional training could lead to unsafe practices; and stating no significant impact disregards the clear benefit of reducing nitrogen narcosis risk. This focus on improved safety and awareness makes it clear why the correct answer emphasizes the decreased risk of nitrogen narcosis.