Rough day at the office? Take a walk or head to the gym for a quick workout. One of the most common mental benefits of exercise is stress relief. Working up a sweat can help manage physical and mental stress. Exercise also increases concentrations of norepinephrine, a chemical that can moderate the brain’s response to stress. So go ahead and get sweaty — working out can reduce stress and boost the body’s ability to deal with existing mental tension. Win-win!