More often than not, the word “core” is used synonymously for six pack abs. In reality however, your rectus abdominus (abs) merely make up a small portion of …
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Fitness Town Video Fit-Tip: Core Strength and Stability training tools
More often than not, the word “core” is used synonymously for six pack abs. In reality however, your rectus abdominus (abs) merely make up a small portion of …
source