One common mistake we see all the time when people perform core exercises or exercises in the weight room is to take their spine out of neutral alignment. Neutral spine is where your spine is in a relaxed, tall position. One small thing that can take your spine out of proper position, that many people do without even thinking about it, is pulling your chin towards your chest.
You see this a lot with planks or clamshells, anything where you’re able to look down at the exercise you’re performing. In running it’s the equivalent of looking straight down at your feet as you run. Keeping your chin up and your eyes straight ahead will help keep your spine in neutral position to improve your posture and your ability to properly engage your core.
For those interested in learning more about what a neutral spine is and why it’s important here is a great piece from backforever.com.