I know that too much sitting and too much computer makes me feel bad. And, it's all HF's fault! I spend too much time here.
Anyway, I haven't done one thing toward Christmas. I do it all at the last minute. But, I remember when in college, how much the Christmas break meant.
I hope you get it all done and then feel better, and then it starts snowing, and then packages start arriving, and you cook boatloads of cookies and the house smells of baking, and you taste the lovely goodies, and don't gain an ounce of weight! It doesn't get any better than that.