Besides protein, a reasonable carbohydrate combination can also provide energy for the human body. If you don't have the energy to finish the training, there may be dangers during the training, but you should also pay attention to their blood sugar status. If you have symptoms such as dizziness, you must stop training in time and supplement carbohydrates.
Of course, it is more important to supplement the water that should be prepared during training, drink less and slowly, and avoid water shortage to ensure the water balance of the body and make them adapt to exercise in a very stable physical state. "avoid drinking water, on the one hand, it will lead to suffocation; On the other hand, when the body's blood heat rises, it will be stimulated by cold water.