Running on an empty stomach in the morning is better than other times to lose weight, but although running on an empty stomach in the morning is the best, it is not recommended to run on an empty stomach for a long time. Long-term running on an empty stomach may lead to stomach problems, which is even more inappropriate for people with bad stomachs.

You'd better not eat before running in the morning, because after eating, your stomach will consume energy to dissolve the food you eat. At this time, if you train, it will bring more burden to your stomach and make it supply your needs twice as fast. After a long time, the stomach will droop. And after breakfast, the pituitary gland will secrete a hormone that will make you want to sleep.

If you really want to eat something first in the morning, don't eat a lot, such as an egg, but train for half an hour, or you will vomit or have a stomachache.