In the fall when the days are shorter and the temperatures cooler, do you find yourself wanting to sleep more? Do you feel blue? You may have seasonal affective disorder. There are measures you can take that may help: 1. Open your shades to let in the sunlight. 2. Head outdoors on sunny days. 3. Include physical activity in your daily routine. 4. Socialize with friends who lift your spirits. If these steps don't help or your symptoms are severe, see your doctor.