However, the following factors should be considered:
Exercise intensity. Physical energy consumption is high, sweating is high, and you need to replenish water during exercise, but you don't need to replenish water at the same time during exercise. The human body has a strong adaptability, which is actually an aspect of physical exercise.
Absorbing ability. The absorption of water by the gastrointestinal tract also requires the participation of energy, which is often said to require the participation of blood. During exercise, a large amount of blood is concentrated on the oxygen supply and energy supply of the exercise system. At this time, drinking too much water can't be absorbed, and it can also cause digestive system discomfort, such as flatulence and gastrointestinal spasm.
Electrolyte balance in the body. Judging from the effect, it is best to drink warm water mixed with a little salt or glucose physiological saline, and similar sports functional drinks can also be considered. First, it is easy to absorb, and second, it is beneficial to maintain electrolyte balance in the body and avoid cramps.
To consider external factors such as temperature and humidity, it is best to replenish water in advance, rather than relying solely on the feeling of thirst to decide whether to replenish water.
A more appropriate method is to replenish water a few times during exercise, and never drink enough at one time. Second, we should pay attention to monitoring the changes of weight after exercise. Weight changes greatly, so you need to replenish water during exercise. Third, in daily training, we should pay more attention to the supplement of water and other nutrients before and after exercise. Generally, it is better to exercise every 30 minutes, and don't rely too much on hydration when exercising.