S.A.D. (seasonal affective disorder)

The past few weeks I have been feeling "off." I am pretty sure it is the changing of the season, the shortening days. I feel like this every year but I don't usually recognize it this soon. I don't feel that bad, but I don't have any energy and I don't want to do anything but hibernate. I haven't been meditating much or reading. I just want to sleep. I am not worried about it, I know it will pass. Just noting it. Even though the weather hasn't been cold, I can definitely feel the change.