water

Good evening. It was very hot today. It is a question for you. How much quantity can you drink water on 1st? Probably you drink 2 liters. I drank about 5 liters water today. When there is an exercise on a hot day like today, I drink a lot of water. It is said that health becomes clean when I drink water. However, I think that I suffer from a stomachache. And I am a stomachache now. Be careful! Thank you.