Tbh is that long even possible?
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The world record is 20 something minutes, so 2 minutes is very easily doable with training. And not even a lot of it. You don’t need years of diving experience to get there, though 20 minutes is a whole other story.
The training involves learning breathing techniques to fill your lungs with more air (divers, swimmers, singers, they all practice this stuff), and learning how to relax your muscles so they don’t waste oxygen on nothing. Then you just practice holding your breath over and over and over again until your body starts adapting to the habit. Your lung capacity increases, you build up your tolerance to the effects of oxygen deprivation and co2 buildup, that sort of thing. It’s not unlike working out to build strength. Takes repetition to convince your body to start improving that aspect of itself.
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