Walking for cancer.

As if there weren't already enough reasons to exercise, a new study out of Massachusetts General Hospital suggests that it might help to prevent cancer.

As reported in Science Blog, 25 lung cancer patients were given an eight week exercise program. Although only less than half were able to complete said program, those who did "experienced a significant reduction in lung cancer symptoms."

Frankly, the study is a little wobbly -- even they admit that -- but it deserves further investigation, wouldn't you say?