
Exercise not only makes a person have a healthy body and strong, but also can make people look more happy or not easily stressed. What causes it?
National Institute for Health and Clinical Excellence in England said that exercise can enhance brain serotonin function in humans, and this is the chemical serotonin in the brain that helps move the messages along the nervous system.
This neurotransmitter perform many functions including regulating mood, appetite and sleep or wake cycles. About 75 percent of the chemical compound is located in the intestinal cells and the remaining neurons in the brain.