There is a new article on my single favorite abdominal stabilization exercise over on Elite FTS - the plank.
Power to the Plank
This article covers the basics - why plank? How do I do it? What's the benefits and how do I make it harder once I'm good at it?
声を出すことで盛り上がる…(火)グラップリング小川クラス20:15〜
17 hours ago
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