90-Degree Elbows: How Arm Swing Fuels Your Running

Proper arm mechanics in running are crucial for maintaining balance, setting a rhythm, and conserving energy. To reduce fatigue and enhance efficiency, runners should aim for an elbow angle of approximately 90 degrees, keep their wrists relaxed, and move their arms in a forward-and-back motion parallel to the body's midline. Rhythm and Stability Mechanics With each stride, the torso and pelvis naturally rotate. The counter-movement of the opposite arm effectively neutralizes this rotational force, stabilizing the core. Without this mechanism, energy is lost to unnecessary oscillations rather than contributing to forward momentum. The arms act as a metronome for the legs: an accelerated arm swing subconsciously increases leg speed. This is particularly beneficial during a finishing sprint.