Drinking too much drinking water before running will increase the load on the stomach. Supplementing a small amount of light salt water during exercise can quickly restore physical fitness. It is best to have breakfast after running for half an hour. This is my many years of fitness experience. I hope you like it.
It is best not to drink water for one hour before exercise. Drinking plenty of water during exercise is a no-no, all you have to do is run all over. Even a small amount of exercise will bring discomfort to the body. If you are worried that excessive sweating during exercise will lead to dehydration. You can choose to replenish water for many times one hour or one and a half hours in advance, and replenish water for about 500mL to1L. As for the accuracy of the quantity, you should judge it according to your own situation, temperature and exercise mode. During exercise, when your lips or throat are a little dry, you can take a sip.
Develop good living habits, drink 300-500ml boiled water on an empty stomach in the morning, then quickly clean the stomach for one hour (about 8000 steps), circulate blood through the kidneys after being absorbed by the large intestine, and then promote metabolism through exercise, so as to excrete toxic waste in the body with sweat! If you can persist for a long time, health is natural.
Personally, if it is a fitness run within 10 km, I suggest adding some water when warming up before running. It's not necessary to run, and it's not convenient to run with a water bottle!
If it is a long-distance running training, bring a small kettle! When you feel thirsty, add a little to maintain water balance in your body! Especially in summer, long-term water shortage may lead to heatstroke! About 50- 100 ml each time is enough!
Don't overeat before running, and don't put too much unnecessary burden on your body. Your body needs to replenish water during and after exercise, but the principle is to drink slowly and slowly without causing stress. I've made this mistake myself before. When you are thirsty, you drink a lot of water, which leads to discomfort in the next exercise.