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Core training isn’t just about looks, it’s about stability, performance, and power. ISSA’s Rock Hard Core course blends anatomy with practical programming to build strength from the inside out. Learn how to design workouts that improve durability, prevent injury, and yes, carve that six-pack. Build cores that are strong, functional, and aesthetic.
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🇺🇸 Ship from USA · On Agora since 2026
$59.95