Centre / Extremities

"Human movement begins in the pelvis and spine and not the extremities - the legs and arms" (source - Truth of Kinesiological).

   This statement is one of the major pillars of Fluid Tennis.
   The strength is in the center (center of mass), and the speed at the extremities.
   The limbs - legs, arms, head and neck are used the extensions of the torso in space. being naturally drawn when we started moving the center of the body.
   Begin any Tennis Begin specific movement from the center (instead of the Extremities), is a brutal change in quality of movement, including the body position in the contact racket / ball moment.
    When the force is done from one end, the chains are constrained in their move smoothly and effectively, while increasing the likelihood of injury.
    The chain flexibility and static inspiratory breathing is fundamental to an effective center link ends.
    In martial arts the concept of the strength that comes from the center is one of the pillars.