How To Sprint Faster By Fixing Your Arm Action Technique
Advanced Speed Training FREE video series ➤ https://goo.gl/jAXXL7
you can increase your speed by improving the technique of your arms. Your arm action can contribute 18-20% of your overall sprint speed and their role and mechanics change through phases of your sprinting.
Advanced Speed Training FREE video series ➤ https://goo.gl/jAXXL7
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