Besides backstroke, other 3 kinds swim appearance needs take a breath, but the take a breath with crawl is the worst. Swim good crawl basically is the balance that wants to be able to control good body. Because the leg department action of crawl is of fluctuation, ask knee cannot be bent, and hand department action is around, and take a breath is the left and right sides, ask the motion of these 3 direction cannot be disturbed each other, whole body wants the axes in having, 3 kinds of movements move around this line respectively, maintain each other balance, make the body forward sharp movement is general take a breath should be two sides take a breath, namely arm every brandish the upper part of the body tilts to the left and right sides slightly 3 times, head side gives surface to suck gas movement cannot too big, can affect the balance of the body otherwise, control a movement only commonly so, without fluctuation movement. Expiratory finish in underwater, be from the expiration in nose, the requirement is even and long. And inspiratory be what finish when head small side gives water is the induction air that use the mouth, the demand is rapid and sufficient. The extent of whole act as far as possible small, time as far as possible short, reduce the effect that take a breath balances to speed and body as far as possible.
Popular now law of take a breath of a kind of odd side, namely every delimit the arm changes energy of life twice, this rises in the development on the foundation of double-faced take a breath, because the two side difficulty of the body is greater, retroflexion meeting more consume physical power, influence speed, just adopt this kind of measure so, but no matter from lay good foundation for, for the comprehensive sex that still masters from the technology, learning two side take a breath is very important.
