Elite runners run with a cadence of over 180 foot strikes per minute. That means each foot strikes the ground at least 90 times per minute. It makes sense that if we want to run fast and efficiently we should model our form after the fastest most efficient runners right? Right! Aside from being copy cats there are physics based reasons for this too. Running at a cadence over 180 takes advantage of ground reaction forces (every reaction has an equal reaction so when you foot pushes down on the ground the ground pushes back) and muscle elasticity. More on that later. Do this: Count your steps when you are running. Take a sample of 20 seconds and count how many times your right foot hits the ground. Multiply that by 3 and you have your one foot cadence per minute. That should be greater than 90. If it's not increase that turnover. Running any other way decreases efficiency and increases your chance of injury so pay attention to this. This is the most important/easiest to change things you can do to fix your running and prevent injury.