You can significantly reduce the level of stress you feel with some exercise. Working out three or more times a week is recommended to increase longevity and overall health as well as reducing stress, and five times or more is even better. Studies show that regular exercise can reduce stress in the short term and the long term. More high-energy exercises like weight training or martial arts can provide a good physical outlet where you can release pent-up tension, while walking or yoga can have a more soothing effect.
For more resources on beginning a new exercise habit, read this article and visit the Programs and Practices section, or the Tension Tamers section. You'll find a variety of exercises and stress management techniques that can enhance your lifestyle. Look around and see what might be right for you.