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Core Ab Ball 20 cm
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Nationally-acclaimed fitness instructor, Brook Benten, M.Ed., ACSM-HFS, explains the anatomy of the abdominal muscles and how they fire during different core-focused movements, then leads you through the ultimate 22-minute core workout chapter. Core muscles are the skeletal muscles between the shoulder girdle and hip flexors (front, back, and side-to-side); the core workout chapter in GoFit Intro to Core Ab Ball DVD hones-in primarily on the abdominals.
DVD Running time: approx. 28 minutes