Even better to do a little more

Article

"A scientist at Lawrence Berkeley National Laboratory, (Paul) Williams has put together the world's largest study on runners, and the evidence found over 20 years of research points to an important conclusion: When it comes to exercise, more is almost always better."

(public vs. personal health) "But Williams' findings haven't exactly caught on with the mainstream public health gurus. It's not that they disagree with Williams' findings. But doctors and public health officials worry that with half the country not meeting the current guidelines, even talking about running 50 miles a week will intimidate folks who aren't doing anything."