Rules The game of tennis is played by two players or two pairs of players. The aim of the game is to throw the ball on the opponent's half so that he could not get it back.
The rules of tennis have changed little since the 1890s. Two exceptions are that from 1908 to 1961 the server had to keep one foot on the ground at all times.
During the game of tennis is very actively involved all muscle groups of the body - legs, press, back, arms and even the neck. In addition, training in this sport also include a decent cardio at which lends itself to stress the cardiovascular, respiratory systems.