For a lot of runners, hills elicit a lot of self doubt, fear, and anxiety. So today on the couch we talk about why and how to properly run up and down hills along with some technical differences for someone running a marathon or shorter versus and ultra distance race. We will give you a hint, it all revolves around the possibility of muscular fatigue. No one wants to be shuffling to the finish line, so take these tips and dominate some hills.