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 Where indeed does our own low entropy come from? The organization in our bodies comes from the food that we eat and the oxygen that we breathe. Often one hears it stated that we obtain energy from our intake of food and oxygen, but there is a clear sense in which that is not really correct. It is true that the food we consume does combine with this oxygen that we take into our bodies, and that this provides us with energy. But, Eor the most part. this energy leaves our bodies again, mainly in the form of heat. Since energy is conserved, and since the actual energy content of our bodies remains more-or-less constant throughout our adult lives, there is no need simply to add to the energy content of our bodies. 
因为能量守恒，所以通常意义上的从食物和氧气中摄入能量的说法其实不准确。
     However, we do need to replace the energy that we continually lose in the form of heat. Indeed, the more energetic that we are, the more energy we actually lose in this form. All this energy must be replaced. Heat is the most disordered form of energy that there is, i.e. it is the highest-entropy form of energy. We take in energy in a low-entropy form(food and oxygen)and we discard it in a high-entropy form (heat, carbon dioxide, excreta
    ).We need to gain energy from our environment, Since energy is conserved. But we are continually fighting against the second law of thermodynamics. Entropy is not conserved; it is increasing all the time To kep ourselves alive, we need to keep lowering the entropy that is within ourselves. We do this by feeding on the low-entropy combination of food and atmospheric oxygen, combining them within our bodies, and discarding the energy,  that we would otherwise have gained, in a high-entropy form. 
（以热量的形式）消耗能量和摄取食物其实是以一种形式的能量替换另一种的过程。因为热量是墒值最高的形式，所以人为了生存是在用低墒的能量替换高墒的能量，也就是在从食物中摄取低墒，来对抗热力学第二定律（宇宙中的墒在一直增加）。和薛定谔的《生命是什么》交叉阅读。