Every entertainment ball in the square is given to the opponent, for fear that the opponent can't catch it. This badminton game is not only an entertainment ball, but also a fitness ball. Badminton recreational ball is called fitness ball. Badminton is a small indoor ball game, made of feathers and cork, and crossed the net with a long-handled tennis racket. Badminton is played on a rectangular court with a net between the courts. Both sides use various techniques and tactics such as serving, hitting and moving to hit the ball back and forth on the internet, so that the ball does not fall into its effective area or make the other side make a mistake.