When we say ‘I want to lose weight,’ what we’re actually saying is, ‘I want to empty my fat cells of the fat they contain so that they deflate like balloons and reduce in size, bringing down my waist size.’ To do so, we need to be in ‘fat-burning’ mode. Just as Jerry could tap into his starch reserves at night, our body can call on glycogen in our liver and muscles to turn back into glucose whenever the thousands of mitochondria in each cell need it. Then, when our glycogen reserves begin to diminish, our body draws on the fat in our fat reserves for energy – we’re in fat-burning mode – and we
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