Not the one on your nightstand, but the one in your head, your biological clock that is said to regulate sleep and awakening, among other things. For many people, this past winter of discontent took its toll. Call for counseling. Pass the Prozac. For many people, particularly women, the approach of winter signals an onset of the blues.
Energy levels drop.
The appetite for sweets and carbohydrates goes up. It seems harder to get things done. I don't have the same energy during the winter months because I don't sleep as well. She also noticed an increase in her appetite for carbohydrates and fats. The winter blues coincide with the shorter days, when less light causes our biological clocks to keep poor time.