Physical fitness in the long-term fitness exercise, can continue to be strong, the improvement of resistance, will make colds and fever will bypass. People who exercise will have higher body metabolism and faster cell metabolism than ordinary people. Even if they are sick, their recovery cycle will be shorter than others.

For long-term sedentary office workers, 90% of them lack exercise. Over time, the aging of the body's functions, joints and other tissues will accelerate, and without strong resistance to diseases, it will be more likely to get sick than others. As your metabolic cycle declines, your recovery cycle will be slower than others.

Wearing masks for outdoor sports is not recommended.

1, wearing a mask and strenuous exercise can easily cause myocardial damage.

Most of the masks worn are close to the face, and the masks themselves have poor breathability, which leads to large respiratory resistance and poor internal and external airflow. However, during high-intensity running, the ventilation will increase to 20 ~ 25 times of the usual level, so running with a mask requires more oxygen metabolism and consumption.

For people with good cardiopulmonary function, it is usually no problem to wear a mask during moderate running.

However, if a person does not have a certain level of training and has poor cardiopulmonary function, it will easily lead to shortness of breath, chaotic rhythm, high heart rate, slightly longer exercise time, poor breathing, even hypoxia, dizziness, chest tightness and other symptoms, which will easily damage the runner's myocardium and increase the risk of exercise and cardiovascular diseases.