Strong emotions start with physiological changes in your body. The heart rate increases, adrenaline surges, and muscles tighten; all before you realize you’re angry. Men and women generally get angry at the same rate of speed, according to neurobiologists. In women, however, it takes a bit longer for nervous system to settle down and return to normal than it does for men. This means that after an argument, a man can cool down pretty quickly, while the woman needs a little extra time.
Her body remains in an agitated state even after resolution to the argument. While still in the agitated state, her brain in still angry and casts blame on other things. The argument then flares up again about a new subject. So, the best thing for a man to do is to change the subject to something more light hearted once things wind down in the argument to help her chill out. As for women, they have to realize what is going on inside of them and give themselves a chance to shake it off.