Drew McDuffie on Instagram: "Ways to Progress Wall Slides Wall Slides are a Serratus Anterior activation drill that we use every single day. Serratus Anterior is responsible for helping guide the scapula (
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From the Top Down: Upper Body Stability for the Rider by Kathlyn Hossack (sequel to How NOT to pull on the reins) | Official Blog by Aspire Equestrian Riding Academy
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