Step aerobics - Wikipedia

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File:US Air Force (USAF) Captain (CPT) Cheryl Morgan, 31st Fighter Wing (FW) Protocol, leads a step-aerobics class held to recognize Women's History Month, at Aviano Air Base (AB), Italy - DPLA

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Calisthenics for Beginners: Step-by-Step Workouts to Build Strength at Any Fitness Level: Schifferle, Matt: 9781646111688: : Books