In advanced stages, synchronization has to be achieved in the front crawl between the movement of head and breathing. The head is moved only when we require breathing. It is turned to inhale air at the exact movement when body propelled forward movement creates a trough-like space in the water. The breathing so done enables time for a single breath for the swimmer per cycle. A swimmer shouldn’t hold his breath. He has to either exhale or inhale. Exhaling and inhaling have to be so tuned with the motion of the head that when you exhale the head is below water and when you inhale it is above water. Flutter Kick: The flutter kick is the movement of the legs upwards and downwards. The function of the flutter kick is to streamline the body like the fish. The kick movement is a regulated affair. The knee should not bend much in the forward movement and the kick backward should not make the foot stick outwards. Beginners begin with making 2 kicks per cycle and proficient swimming demands six per cycle. The upward and downward kicking helps the body to remain in a horizontal position. Leg kicking also helps to maintain the line of the body. The toes and muscles are kept relaxed or else it leads to the development of a cramp in the arch of the foot. .
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