If humans can go weeks without eating, why do we eat 3 times a day?
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If you can go three minutes without breathing, why don’t you continually alternate holding your breath for two minutes and then taking an extremely deep breath?
Because your body can survive an instance of it, but if you repeat it, you use up your resources and can’t get it back fast enough. You can breathe enough with one breath to survive for two minutes, but then your blood is so full of CO2 and so depleted of O2 that you can’t repeat the feat with a second breath. You can eat enough in one sitting to survive for a day or two, but any longer than that between meals, and you can’t eat faster than you use up energy, and you begin starving.
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