Trail Running - Burn More Calories

Runners, want to burn even more calories? Hit the trail.

Photo: ex_magician, Flickr

Apparently, trail running burns more calories than plain old sidewalk running -- 10 percent more calories to be specific. And because you're running uphill and downhill and everywhere in between, it challenges more muscles than your regular inner-city route does.

Stuck in the city this weekend? Try to find a hilly part or green space and the natural nooks and crannies on a different route.