BOOST YOUR MOOD, Are you feeling down? Well then move! Studies have shown that engaging in physical activities is just as effective as any other treatment for mild depression. So finish reading this and go take a walk or play a sport.
2. It appears to stimulate the vagus nerve, improving function of the brain's emotion-sensing network as well as of the heart. The vagus nerve is increasingly recognized as an important pathway of depression.
3. By acting on neurohormones that govern the stress response, exercise seems to improve the ability of the body to tolerate stress and to meet changing demands. A dysregulated stress response, perhaps stemming from early psychological trauma, is implicated as a cause of depression.
For a more in depth analysis follow the link.
Move to Boost Mood via [psychology today]