What weather is not suitable for swimming?

Reprinted the following conditions are not suitable for swimming:

1. Polluted rivers, reservoirs, places with rapids, places where two rivers meet, and rivers and lakes with large drops are not suitable for swimming. Generally speaking, all rivers, lakes and shantang reservoirs with unknown water conditions are not suitable for swimming.

2, bad weather such as thunderstorms, strong winds, sudden changes in weather, etc. It is also not suitable for swimming.

You can't go swimming alone. Without a companion, swimming alone is the most prone to problems. Students should be accompanied by parents or adults when swimming, otherwise swimming outdoors is prohibited.

People who are sick should not go swimming. Patients with chronic diseases such as otitis media and heart disease, as well as those with colds, fever, mental fatigue and physical weakness, are not allowed to go swimming.

5. After taking part in strong physical labor or strenuous exercise, you can't jump into the water to swim immediately, especially when sweating or fever, otherwise it will easily cause cramps, colds or accidents.