In terms of things being truthful, the primary mechanism touted by fasted cardio lovers, namely an increase in fat oxidation, does in fact occur.

就事实而言，空腹的有氧运动爱好者吹捧的主要机制，即脂肪氧化的增加，确实存在。

Eating a meal before your cardio, on the other hand, ends up restricting fat oxidation, which means your body burns more carbohydrates for energy instead.

另一方面，在做有氧运动前吃一顿饭其实最终是会限制脂肪氧化的，这意味着你的身体会燃烧更多的碳水化合物来获取能量。

There are some evidence of increased fat oxidation, which means burning more fat during exercise, but the overall outcomes in both performance and gains are largely neutral for pre-exercise fat consumption.

有一些证据表明，脂肪氧化会增加，这意味着在运动中燃烧更多的脂肪，但运动前的脂肪消耗在表现和收益方面的总体结果基本上是中性的。