When the winter comes, millions of Americans realize they don't feel as happy as usual, and may be depressed If you're one of them, you may be suffering from “seasonal affective disorder” or SAD, whose symptoms include exhaustion, difficulty concentrating, sleep problems, body aches and pains, and a loss of interest in activities you normally enjoy. __36__ Take extra Vitamin D. Researchers at the University of Georgia analyzed more than 100 articles that examined the link between Vitamin D and depression. They found that a lack of Vitamin D appeared to be a major factor in the development of SAD. __37__ __38__ Most researchers agree that the people who fall victim to SAD most often are particularly sensitive to the lack of light. Weather permitting, go for a walk. In your home or office, try sitting close to a window that faces south. Increase exercise. Although exercising may be about the last thing you want to do and would rather curl up with a book or watch a DVD, studies have shown that upping your exercise routine can counteract SAD. And experts advise exercising at least 20 minutes a day at least three times a week. __39__ The benefits are also long lasting. The longer you do it, the more benefit you'll get. Eat more fish. __40__ Studies have found that people who have low levels of two chemicals found in fish, EPA and DHA, are at increased risk for depression. Either eat more fish — at least three times a week — or take fish oil capsules to combat SAD. Although dark winter days got you down, don't worry because nature is always waiting to help. Just enjoy the winter days and benefit from the nature! A.Take medicine. B.Get more light. C.If the weather permits, take a walk. D.Any type of exercise offers benefits. E.Fatty fish contain omega­3 fatty acids. F.To fight SAD, here are some easy, natural ways. G.So the vitamin D Council recommends at least 2, 000 IU daily.