What is a significant benefit of using Nitrox mixes over air?

Using Nitrox mixes over regular air provides a significant benefit in the form of less fatigue and longer bottom times. This is primarily due to the reduced percentage of nitrogen in Nitrox compared to standard air, which contains about 78% nitrogen. When divers use a Nitrox mix, they inhale less nitrogen during their dive, leading to slower nitrogen absorption in the body.

This is beneficial for several reasons. First, lower nitrogen levels can decrease the risk of decompression sickness, allowing divers to stay underwater longer without the same level of risk associated with nitrogen loading. As a result, divers often report feeling less fatigued after diving with Nitrox because the reduced nitrogen absorption leads to a more efficient and less taxing diving experience.

Additionally, the ability to extend bottom times allows divers to explore more or engage in activities at depth for longer periods, maximizing their dive experience. This capability is particularly advantageous when planning multi-level dives or when considering safety stops, as Nitrox also enhances overall dive safety practices.

The other options do not accurately represent benefits of using Nitrox. For instance, increased nitrogen absorption would be counterproductive, as the goal of using Nitrox is to minimize nitrogen uptake. Cold water tolerance and buoyancy control, while important factors in diving, are