Exercise has always been seen to increase one's physical fitness levels, but studies have recently shown that there are more effects of exercise on the body than previously thought. In particular, recent findings show that exercise can be of great benefit for one's mental well-being by changing brain chemistry in such a way as to lessen symptoms of depression.

Specifically, a new study showed that exercise stimulates production of certain chemicals within the brain. These chemicals increase the person's mood and energy levels and make him/her more relaxed. The names of these chemicals are serotonin, dopamine and endorphins, and they are referred to as "happy brain chemicals" because they help to improve mood and alleviate stress.

In addition, the researchers found that exercise increases the amount of a special protein Brain-Derived Neurotrophic Factor (BDNF). This protein helps brain cells develop, repair and connect more easily, thus increasing memory and learning capacity and decreasing depression risks.

Physical activity also reduces the level of cortisol which is a stress hormone secreted by the body. High levels of cortisol in the body for a prolonged period of time result in anxiety, insomnia and increases chances of developing depression. Exercise therefore plays an important role in reducing the levels of cortisol which aids the body and mind in coping with everyday stress effectively.

Experts believe that even small things like walking, riding bicycles, jogging, swimming, dancing, yoga and many other forms of exercise have mental health benefits. One does not have to engage in rigorous exercises in order to gain from their benefits. It might take about 30 minutes of physical activity on a daily basis.

The studies also revealed that exercise enhances blood flow to the brain thus increasing its supply of oxygen and nutrients.

According to psychologists, exercise could enhance sleep and promote feelings of self-confidence. Being physically active would give people a sense of achievement, increased levels of energy during the day, and few negative thoughts. Consequently, it would become easier for one to cope with the condition of depression.

Exercise cannot replace medicine or professional assistance in mental health care, but scientists believe that it could serve as one of the ways to deal with depression. Scientists advise individuals with mental health disorders to consult specialists about treatment while exercising on a regular basis as well.

Scientists wish to motivate people to see exercises in a new way as one of the keys to good physical and mental health. The latter means that being physically active is necessary to keep the brain healthy and maintain good mood.