We all breathe through our noses for the sake of breathing, but sometimes our mouths are ok, but most people are not used to opening them, which is not suitable for aesthetics. Comparing the nose with the mouth, we know that they are both connected to the throat. The only thing in the nose is nose hair, which can prevent some people from contacting with particulate matter, but it is exaggerated to say that breathing through the mouth will be harmful to health. Although the mouth is as useless as nose hair, breathing in our living environment for a long time will only make our mouth dry. If we go to that dusty place, it doesn't matter what we breathe. At this time, it is best to take protective measures. It's even more nonsense to say that breathing in the mouth will make you ugly. A person's ugliness or beauty lies in your love for yourself, not in your breath.
Our life is getting better and better, so it is normal for health problems to be paid more and more attention. Only when you are healthy can you become more beautiful, and when you listen to those so-called medical arguments, you should look at that generation with suspicion and doubt, and blindly follow the crowd without doing experiments.
Health problems have become our concern now. We must always focus on it in the wrong direction. While paying attention to health, we should pay more attention to whether this little health knowledge has scientific basis and is trustworthy.