I can't run but I walk and I find that if I miss a single day (excluding scheduled rest days) my mood lowers and I begin to feel more lethargic. Since Christmas of last year 2011 I have walked off five stone, I still plan to loes another three but that will be next year. I walk on roads or paved paths but I find lots to see and interact with. There are several others in my area who also walk rather than run.
Here is wishing you all a very pleasant Holiday and a Healthier New Year.
OXOX
Cy