Most runners develop their form through habit rather than instruction, which means small inefficiencies in posture, arm drive, and foot strike quietly accumulate and limit both speed and endurance without the runner ever identifying the cause. Correcting running form feels awkward at first precisely because it disrupts patterns the body has repeated thousands of times, and without understanding what to change and why, most runners revert to old habits within a few sessions.
This article explains the key components of efficient running form, what each one contributes to speed and economy, and how to make lasting improvements that carry over from training into race situations.