It is correct to inhale through your mouth and exhale through your nose when swimming. Breathing and inhalation must be through the mouth, and exhalation must be in the water, with the nose or nose and mouth together. The mouth and nose are divided into two parts. The mouth is only responsible for inhaling and the nose is only responsible for exhaling, because many times the nose is used for exhaling to prevent the nose from choking.

Swimming is a whole-body development exercise, based on fluid mechanics, combined with the body's coordination ability in water, water sense and other factors, so that people can swim freely in the water like fish.

Inhale through the mouth, exhale through the nose and mouth, and the reason for choking in swimming is to inhale through the nose. In addition, if you inhale through your mouth improperly, you will also drink water. The way to prevent choking is to adjust your breathing when swimming, and don't inhale through your nose.

Extended data:

First, learn to breathe:

Swimming without breathing can't be called swimming, it can only be "holding your breath". The correct swimming breathing is to inhale through the mouth and exhale through the nose or nose and mouth.

Stand in shoulder-deep water and grasp the edge of the pool (shore) with both hands; Or grab your partner's hand, take a deep breath through your mouth, then bury your head in the water and exhale slowly through your nose until the waste gas in your body is exhausted, then quickly raise your head and inhale through your mouth.

Proficient in the above techniques, you can exhale and inhale many times continuously, coherently and naturally, which requires you to independently complete the movement techniques of slow breathing and fast inhalation.

Second, practice breathing taboos:

Common mistake: inhale through the nose, but don't exhale underwater.

Guidance and correction methods: explain and demonstrate again, and make clear the main points of action.

When practicing, you can pinch your nose with your hand (or pinch your nose with a nose clip) and force yourself to inhale through your mouth.

Explain the essentials of action, and ask to exhale forcibly during practice, and constantly emit bubbles.

Third, the wrong way of breaststroke:

Paddling and breathing don't match. The correct breaststroke action should be to raise your head and inhale when paddling, and lower your head and exhale when stretching your arms, but in actual swimming, many people do it backwards. It's like breathing with your head down when paddling, and breathing with your head up when stretching your arms. In this way, the whole swimming movement is completely out of touch, and it is easy to swim more and more disorderly, which not only makes the swimming movement ugly, but also greatly affects the speed.

References:

Baidu encyclopedia-water-based

People's Network-Breaststroke, paddling and breathing are well coordinated.