“FORTUNE — Sometimes you have to play hardball in a business negotiation. Say your boss throws you in the ring to settle terms with a competitor or a difficult client. You’ve got to go into it like a boxer, right? Dominate, show you won’t budge.
Actually, experts say that the best negotiators get what they want without the aggression. Beyond the detrimental effects that aggression or anger can have on personal health and the health of the workplace, professional negotiators say those emotions can get in the way of getting what you want out of a discussion.”