Take the stairs, not the elevator

I found this recent study in London to be quite fascinating. I always noticed more people taking the elevator than the stairs at shopping malls but when they were warned about the possible side effects it would have on their heart, many of them stopped and started to walk.

Researchers put up this sign: "Attention all shoppers: taking the stairs protects your heart." And it actually worked. The use of the stairway more than doubled over a six-week period.

Since only half of adult Americans exercise, do you think focusing on using stairs more often could help improve our health habits and physical activity?