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                                    [Choose #4] Haven’t had the need for it yet. I might get certified later. |  | 
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                                    [Choose #1] Less tired on multiple shallow dive |  | 
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                                    [Choose #1] I’m glad I did the cert yrs ago.As most have responded.Less tired & no dry mouth..It’s also been called geezer gas from another source. |  | 
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                                    [Choose #1] Less tired and longer dives. I run out of time before gasses as a 104 lasts all day when teaching |  | 
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                                    [Choose #1] No dry mouth, less tired, no dcs. |  | 
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                                    [Choose #1] Less risk of Dcs when doing ascent exercises in cmas level 2,3 and 4, 2 or 3 times a day. It is good but make sure that you are aware that even nitrox has limits eg depth limits and exposure time limits. |  | 
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                                    [Choose #1] Had a student with Reynaulds Syndrome. Unable to complete on air, but was great with Nitrox. |  | 
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                                    [Choose #1] ...I get more dives in a single day for sure, less nitrogen loading means shorter surface intervals! But I don’t fell any less tired than I would if I were diving on air! |  | 
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                                    [Choose #1] I love the longer bottom time on deep dives. Yes, it cost more, but for deeper dives its definitely worth it! |  | 
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                                    [Choose #1] do a lot of assiting on open water dives, feel a lot better after so many trips chasing students up and down also I find that my energy is better whenever I dive Nitrox. |  | 
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                                    [Choose #1] Throat is not as dry, more energy and feel bettter. |  | 
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                                    Agojo - 8/22/2012 2:57 PM  [Choose #1] Wallet lighter, more bottom time and less time on the surface baking in the sun and bouncing around on the boat. The less time on the surface makes for a shorter day and not as tired from being in the sun. |  | 
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                                    [Choose #1] When diving extended days - say in Cozumel - I always use EAN on the second tank. I have found that I am less fatigued. I also do not adjust my computer for the higher mix - I like it for the extra safety margin of less nitrogen absorbtion. |  | 
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                                    [Choose #1] I usually feel better, less tired... |  | 
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                                    [Choose #2] Mild headaches with and without Nitrox. No difference for me so far except the time. |  | 
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                                    [Choose #2] No difference at all except longer bottom time |  | 
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                                    [Choose #1] More alert and energetic after diving. I love it and even use it in the pool when teaching. We only run 30% here due to the deep wreck dives off the NC coast. |  | 
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                                    [Choose #1] Increased bottom time at depth, energy levels the same, but yes sometimes with deeper dives 80-100 ft on air I had minor headaches. I never had one yet with Nitrox. And yes wallet is much more "buoyant"... |  | 
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                                    [Choose #4] I certified for it, but cant justify the increased fill price. |  | 
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                                    [Choose #2] No less headaches, no more energy, nothing different except less nitrogen absorbtion. |  | 
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                                    [Choose #1] My wallet is thinner |  |