It is recommended to eat less in the morning before running in the morning, so that you can make your body healthier and also avoid discomfort. Running on an empty stomach is not good for the body, but the time to eat breakfast and exercise in the morning should be about 30-60 minutes apart, that is, it is better to run after eating breakfast. But the morning fasting long run for weight loss is better, if you want to lose weight you can try to run on an empty stomach, you can take milk or bread with you, if the symptoms of dizziness and low blood sugar can be supplemented in time. But people with gastrointestinal diseases, such as gastritis, it is best to eat something before running. If you sweat a lot after running, you may become dehydrated, so it is recommended that you drink 100-200ml of water in the process of running or after running, not too much water at one time, but a small amount of water is better for the gastrointestinal tract.