Fatigue & Sleep

Part of the reason you might stop doing things you enjoy is because you feel so tired. Depression often comes with a lack of energy and an overwhelming feeling of lethargy, which can be the most debilitating symptoms of depression. This could lead to excessive sleeping or no sleep at all.
Depression is also linked to insomnia, as one might lead to the other and vice versa. They can also make each other worse. The lack of quality, restful sleep can also lead to anxiety, which is explained on the next page.   for more http://www.healthline.com/health-slideshow/recognizing-depression-symptoms?utm_medium=yahhp#4