Because running earlier will consume more glycogen.

If running a little longer, it will lead to hypoglycemia and dizziness, so that there is a safety hazard in running.

So decide whether to eat or not according to the body reaction…

If you feel strong hunger before getting up early and running, it is recommended to eat two mouthfuls of bread or a banana to supplement some sugar to prevent low blood sugar.

On the one hand, it is to supplement the water lost in sleep, prevent the blood fat from thickening, and on the other hand, make water reserves for sweating during running.

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Eat first or run first? If it’s morning, you can run before eating, but it’s best to drink a cup of warm boiled water before running.