Running is way more healthy for you than walking. And walking is way more healthy for you than running.
That is what scientist Paul T. Williams of the Lawrence Berkeley National Laboratory recently discovered. He used the same data set to publish two opposing findings.
This is great news for me, because running hurts my knees.
This article on Slate.com explains these findings somewhat better than I just did: "Run, Don't Walk." "Don't Run, Walk."
I think it's all pretty irrelevant, though. Exercise is good for you. You should do whatever exercise you enjoy most. I like riding my bike. I feel like a child typing that sentence, but it's true. It's my favorite type of exercise. I actually really enjoy it.