it's circulating around your body.

它开始在体内循环
Most cells in your body have insulin receptors

体内大多数细胞中都有胰岛素受体
so insulin is starting to bind to insulin receptors on those cells.

胰岛素就开始与细胞上的胰岛素受体结合
When it does it makes biochemical changes inside the cells and

这导致细胞内部发生生物化学变化
one of the things it does is

其中的一个变化是
increase glucose uptake into certain kinds of cells,

某些细胞开始增加对糖分的摄取
particularly fat cells and muscle cells.

尤其是脂肪细胞和肌细胞
Well, why does it increase uptake of glucose into muscle cells?

那么肌细胞为什么要增加糖的摄取
Because muscle can use and

因为肌肉细胞可以利用糖分
frequently is using glucose as a source of energy.

通常将糖作为能量来源
So, when there is extra glucose you

当有额外的糖分存在时
want to put it into the cells that can use it immediately.

能迅速利用糖分的细胞就开始摄取糖分