We all know that the mind has a lot of control over the body, but the body also has a great influence on the mind. Since physical sports affect the body, then it follows that participation in sports affect mood and even behavior. Taekwondo training may have an effect on bettering one's mood.
A 1998 study by Berger and Owen, Stress Reduction and Mood Enhancement in Four Exercise Modes: Swimming, Body Conditioning, Hatha Yoga and Fencing, in Research Quarterly for Exercise and Sport, looked at the effects of swimming, body conditioning (weight lifting and running), hatha yoga (an eastern, non-martial art) and fencing (a non-eastern, combat art) on stress reduction. They concentrated on aspects of exercise that were thought to best provide psychological benefits, especially stress reduction, such as:
- Non-competitive aspect, (competition was assumed to be inherently stressful).
- Predicable elements, (so exerciser may tune out environment).
- Rhythmical nature (to encourage the mind to wander).
The last two aspects help reduce stress by providing a "time out" for the mind. Hobbies and exercise reduce anxiety and depression. Anger and fatigue are decreased only with exercise.