The time spent making a substitute must not be included as playing time. If the ball is hurled through one's own korf, the opposite team scores. Thus, it is impossible to throw the ball at yourself in Korfball. This would be very dangerous, because if you are not careful, the ball could hit another player or go out of bounds. However, since there is no penalty for self-throwing, some players do so in order to stop the opposing team from scoring. This is not recommended, because once you tell your opponents that they can score whenever they want by just throwing the ball out of play, they will use this tactic often. Also, throwing the ball out of bounds does not count and neither does hitting yourself with the ball. In fact, there are several ways in which a player can give away penalties during a game. If a player uses abusive language or throws his/her racket on the floor, the referee has the right to stop the game and issue a penalty. On the other hand, if a player takes too long to take a free kick, the opponent gets penalized for time wasting. Finally, if a player is injured and cannot continue, the coach or a substitute player must leave the court immediately.