1. Exercise and depression
Blood flow is increased to the brain from exercise and this releases endorphins, the body’s natural antidepressant. Other similar neurotransmitters are also released, such as serotonin, which improve your mood. Endorphins interact with the brain’s receptors that control the perception of pain; they also activate a positive, happy feeling similar to that of morphine. Exercise boosts the action of these endorphins. Exercise also stimulates norepinephrine, another neurotransmitter which can help improve mood.