What is one advantage of Nitrox for repetitive diving?

One advantage of using Nitrox for repetitive diving is the lower nitrogen loading from previous dives. When divers use Nitrox, which is a blend of oxygen and nitrogen with a greater percentage of oxygen than air, it allows for a reduced amount of nitrogen uptake in the body compared to breathing regular air at the same depth.

This reduced nitrogen loading is beneficial during repetitive dives because it helps minimize the accumulation of nitrogen in tissues, thereby lowering the risk of decompression sickness or "the bends" on subsequent dives. Since the body eliminates nitrogen gradually after diving, using Nitrox can enhance a diver's safety and extend dive opportunities across multiple dives within the same day, compared to air diving where nitrogen loading is higher.

Choosing this option reflects an understanding of how Nitrox affects nitrogen absorption and off-gassing, showing why it can be a safer option for divers engaged in consecutive diving activities.