Hi. My name's Shane Freels with livestrong.com. Today, we're going to tips for covering high walls in obstacle courses. Here's what I love about you know, showing you guys exercises for high walls in obstacle courses. It's just brute strength, I mean you gotta know how to position your body, you gotta build your forearms, you gotta build your fingertips, you gotta build your latissimus dorsi which is going to be your biggest muscle when you're using it. And you also have to have core strength because your full body is being engaged when you're trying to elevate and pull yourself over a wall. I'm going to show you just a basic exercise of a pull-up, and I'm going to do it from a wide stance. Because you never know what that wall's going to look like, what your grip's going to look like. So here's another exercise I like for high walls in obstacle courses. It's what we call a straight pull. It's a very tough exercise. I'd say 90 percent of the people I see doing these exercises don't usually do them right. And here's one of the big reasons why. You don't have enough core strength. So what ends up happening a lot of times as you go to do the exercise, as your arms go out your back will start to arch. And as you pull back in instead of using your lats, you'll bend at the waist and you'll use your hip flexors and you won't use the core properly or you won't use your lats properly either. Now remember we're trying to do a pulling exercise while initiating the core. And this is a full body exercise. You gotta think of yourself, as your arms go away your body stays straight, as the arms come back the body stays straight. That's the proper technique for doing what we call a straight arm role out. My name is Shane Freels, and today we just went over tips for high walls and obstacle courses. Hope you utilize them and get over those high walls that you come up to. Well have a great day.