Are you allowed to head butt another player in the chest ? (IN SOCCER)
I found this although I am not a soccer player nor do I know all the rules.
http://www.helium.com/items/1917508-nhl-head-butting-rule
and this.
http://www.soccerdrillstips.com/rules/soccer-rules-and-regulations-fifa.html
Zidane of France got red-carded for doing it deliberately in the 2006 World Cup. Do you recall that incident?
http://www.youtube.com/watch?v=vF4iWIE77Ts
Another player, Etoo of Cameroon, was recently banned for three games for a similar incident.
No, in soccer, intentional head-butting is not allowed and is considered a foul. The Laws of the Game, which are the rules of soccer, explicitly state that "using excessive force" and "intentionally endangering the safety of an opponent" are both fouls that can result in disciplinary action, such as a yellow or red card, or even a player being sent off.
To find this information, you can refer to the official regulations or rules of the game. These rules are established by the International Football Association Board (IFAB) and are widely published and available for reference. You can easily search for the Laws of the Game online, which include specific guidelines on what is allowed and what is not allowed during a soccer match.