"Just walk more."
So we all hear that, right? And yes, moderate exercise is better than no exercise and for many, many people, walking a few miles a day would be a marvelous step (joke) in the right direction. However, it turns out that really vigorous exercise, like running, playing soccer, or going for a hard bike ride may do a lot more for you in terms of disease prevention. Here's a recent study reported by BBC News that makes just that point,
http://www.bbc.com/news/health-26581722
