As you run, keep your arms and hands as relaxed as possible. Avoid tightening your hands into fists. If you're clenching your hands, the tension will move from there up your arms to your shoulders and neck.
As you run, keep your arms and hands as relaxed as possible. Avoid tightening your hands into fists. If you're clenching your hands, the tension will move from there up your arms to your shoulders ...
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