After 30 minutes of exercise you can drink water, it is not recommended to drink water immediately after exercise for the following factors: 1, 2, drinking water immediately after exercise will also increase the load on the heart, water can not be fully absorbed and fully transported to the body’s capillaries, and will increase the burden on the heart, drinking water after 30 minutes of exercise can achieve the maximum best absorption effect, but also will not cause excessive stimulation of the gastrointestinal tract and excessive burden on the cardiovascular.