Editing Backstroke (section)

===Body movement===
Due to the asynchronous movement of the arms, the body tends to roll around its long axis. By taking advantage of this rolling motion, swimmers can increase their effectiveness while swimming backstroke. The overall position of the body is straight in the horizontal to reduce drag. Beginners frequently let their posterior and thighs sink too low, which increases drag. To avoid this, the upper legs have to be moved to the extreme down position at each kick even with a little help by the back and the foot tips have to be fixed in the extreme lower position and the head is held out of the water to act as a counter-weight.