Spring is hot and cold. What happened?

Spring is affected by hot and cold air, and the weather is changeable, which is normal.

The temperature difference in spring is relatively large, and only this season is the biggest all year round. Although the temperature has risen, the temperature difference between morning and evening is still very large. If you take off your winter clothes too early at this time, you will definitely catch a cold and get arthritis easily. If you can do proper physical exercise, your resistance will be greatly improved. In addition, the climate in spring is relatively dry, and drinking more water can also prevent the harm caused by the cold in late spring.