Running Posture Do's and Don't's Your posture is important for your spine. This is true no matter what you're doing, whether you're sitting in front of a computer, standing in line, or running in a marathon. How you hold yourself affects your body. Did you know you increase the amount of pressure on your spine when you run? This means you put yourself at an increased risk of injury when running, so maintaining proper running posture is important. To review, a healthy spine should make a slight S-shape when viewed from the side. The bottom curve inward of the S