How do synchronized swimmers breathe, how do they hear music, and are their eyes open?

Now need synchronized swimming seedling requirements love synchronized swimming, from the age of seven or eight years old contact, preferably have a swimming or dance foundation, slender body, beautiful legs and other requirements. The team members are selected between the ages of five and ten. Synchronized swimmers are relatively strong due to the fact that underwater sports use a lot of physical strength. They can hold their breath, can breaststroke, can butterfly, have a lung capacity of more than 4,000, are in good physical condition and have no heart disease. They are the perfect combination of competitive sports and art, so they are highly ornamental. Now there is a kind of water aerobics is borrowed from the action of synchronized swimming to make up, it is mainly for the public, is a good means of fitness, as for holding your breath? It is best to practice under the supervision of a professional coach, and if it is in order to improve lung capacity, it is not necessary to hold your breath to exercise, you can increase the time and speed of swimming to improve the ability to hold your breath! The connection of breath holding should be gradual, otherwise it will cause damage to the body. Synchronized swimming in the water hands and feet need to use, in the water the upper body in the water action will need to use the power of the legs to control, reverse legs in the water will need to rely on the power of the upper limbs to control, so this project is to require athletes to use the whole body of every muscle, but also need to be coordinated with the body, as for the water, athletes because from childhood to learn to swim in the four swimming posture are Athletes learn to swim from a very young age, and only after they have mastered all four swimming strokes do they begin to learn synchronized swimming strokes, which simply means that they are as flexible as a fish in the water. Synchronized swimming can be done underwater without goggles, but it takes time to get used to and is very uncomfortable at first. It's uncomfortable at first because there are drugs, bleach and other things in the water. Usually athletes only take them off a while before a competition, to get used to the competition. Usually also with the water mirror to do a variety of synchronized movements, everyone should be able to open their eyes in the water, there is just an adaptation process. Synchronized swimmers compete with nose clips on their noses because synchronized swimming often requires inversion, in order to prevent their noses from getting into the water. They must always breathe through their mouths during training and performances. More importantly, the use of underwater speakers allows the athlete to hear the music clearly underwater and use it to keep up with the rhythm of the music and stay in sync with their partner