The weather has changed, and my legs hurt.

In this case, the main consideration is muscle spasm and joint injury caused by cold.

It's very hot, and everyone likes to sleep with the air conditioner or fan on at night.

This is the reason why this symptom is most likely to appear in summer.

Because if a certain part of the human body is stimulated by the cool breeze for a long time,

There will be poor blood flow in this part, and the blood carries nutrients, ions and other substances.

Will be greatly reduced,

In addition, when people fall asleep at night, their resistance and immunity are relatively awake.

It is reduced.

These two main reasons lead to the appearance of muscle tissue in cold parts of human body.

Symptoms of sourness, pain and discomfort

Therefore, it is suggested that before going to bed at night, when the fan and air conditioner are set, they will automatically turn off when we fall asleep.

This can help you sleep peacefully and avoid the discomfort caused by catching cold.