A new report from the American Psychological Association (APA), titled "Stress in America: Our Health at Risk," shows that many Americans consistently report high levels of stress, with 22 percent reporting "extreme stress" (an 8, 9 or 10 on a 10-point scale, where 1 is little or no stress and 10 is a great deal of stress). If you're one of them, consider getting more exercise. "Taking one small step to reduce your stress and improve your emotional health, such as going on a daily walk, can have a beneficial effect," the APA says. "Being active is a small but powerful change you can make to manage stress. Physical activity increases your body's production of feel-good endorphins, a type of neurotransmitter in the brain, and helps in treating mild forms of depression and anxiety."