Sometimes when you wave goodbye to your friend, it feels like your arm is jiggling even after you've stopped waving. Don't fret. It's easy to tighten and tone up your arms — just hop on your yoga mat and do these eight poses that will strengthen and sculpt your arms in no time. Move through this sequence on one side and then repeat again on the other.
Image Source: POPSUGAR Photography / Louisa Larson
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