FM is characterized by muscle pain, fatigue, and "tender points," specific places on the body that hurt when pressure is applied. Individuals with FM may also experience trouble sleeping, morning stiffness, headaches, and mood disorders. The exact cause of FM is unknown, and currently, there is no cure. While exercise improves the symptoms of FM, pain and fatigue often prevent individuals from beginning an exercise regimen in the first place. Because of the known benefits of exercise on FM, it is important to find new ways for individuals with FM to increase their physical activity. Lifestyle physical activity, which involves any type of moderate-intensity activity such as walking, housecleaning, shopping, and gardening, may be more doable than structured exercise for individuals with FM. Also, lifestyle physical activity accumulated in short bouts over time can be as effective as single exercise sessions in producing health benefits. The purpose of this study is to determine the effect of daily 30-minute lifestyle physical activity performed throughout the day on pain and fatigue in sedentary adults with FM.