Stored energy (glycogen) can only fuel a workout for about an hour.

身体储存的能量(糖元)在训练持续一个小时左右就消耗殆尽了。

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We store only a very limited amount of carbohydrate (glycogen) in our bodies.

人体只能储存非常有限量的糖(肝糖)。

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We store only a very limited amount of carbohydrate (glycogen) in our bodies.

人体只能储存非常有限量的糖(肝糖)。

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