The muscles need oxygen to make energy. And the molecule that carries oxygen to muscle contains iron. Guess what color iron is in the fish? Red.

肌肉需要氧气来制造能量，而负责输送氧气到肌肉里的小分子载体含有铁元素。猜猜铁元素在鱼肉里呈什么颜色？红色。

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Via the mapping technique, the hibernating muscle appears as red, while the healthy muscle is blue.

通过定位仪器，这些冬眠心肌显现红色，而健康心肌是蓝色。

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Around 25% of energy generated this way is used for your brain alone, while the rest goes to muscle tissues and red blood cells.

通过这个方式产生的能量中约25%是属于大脑的，其他的则被肌肉组织和红细胞所利用。

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Scientists have already identified the genes responsible for building muscle and increasing red cell production.

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