It is important to recognise when you feel angry or experience feelings that may lead to anger. You should not try to suppress your anger but instead try to understand it and act in a positive way to alleviate negative aspects of your anger.
When you exercise regularly, your body learns how to regulate your adrenaline and cortisol levels more effectively. People who are physically fit, have more optimum levels of endorphins; endorphins are hormones that make you feel good and therefore less likely to feel angry. Exercise improves both the strength and the efficiency of your cardiovascular system to get the oxygen and nutrients to your muscles. When your cardiovascular system works better, everything seems easier and you have more energy for the fun stuff in life.