With your arms straight and spread out wide, push in and out in small range of motion and fast enough to feel the resistance. Do not hyperextend your arms behind your shoulders and do not move them across your chest. Keep them on the side aligned with your shoulders.
Push your arms in and out twice with inhale and twice with exhale.
Use your outer chest and upper back muscles to push in and out.
Fast In&Out Closed Arms
Crossover Big to Low ROM
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