When seasons change

You know how people get excited about the transition from winter to spring. I'm not one of those people. Don't get me wrong, I'm excited for warmer weather. I'm tired of the cold. But for some reason I just get in this state where I'm not happy or sad. It's like I don't feel any emotion, my body is running on auto pilot. I figure this has something to do with the chemicals in our brain when the seasons change. Everybody acts differently in this situation and this is just how I act.