After all, chewing gum is not a healthy food. It may add sugar, pigment, essence and other ingredients. Eating these sweets is not good for reducing fat. If it is strenuous exercise such as basketball and sprint, it is easy to swallow chewing gum, so be careful.
When people are running, the oxygen demand of human body increases with the increase of running speed. In order to change this situation, it is necessary to speed up the breathing frequency and increase the breathing depth. However, there is a certain limit to the acceleration of respiratory rate, and the most effective range is generally 35 ~ 40 times per minute.
If the maximum number of breaths per minute is 60, and the average breath is once per second, it will inevitably make the breathing shallow, reduce the ventilation, affect the inhalation of oxygen and the discharge of carbon dioxide, increase the concentration of carbon dioxide in the blood and decrease the concentration of oxygen.
Extended data:
Breathing through the nose and matching the running rhythm can meet the oxygen demand in the body. With the increase of running distance and intensity, the demand for oxygen increases, and the breathing mode of mouth and nose should be changed. Inhale and exhale slowly, thin and long, and open your mouth slightly when exhaling, so as to avoid quick breathing or big breathing.
Shortness of breath and poor sense of breathing during running are due to insufficient exhalation and insufficient discharge of carbon dioxide, which occupies alveoli and limits the inhalation of oxygen. If you want to increase the expiratory volume, you must exhale through your mouth and consciously increase the expiratory volume and time.