Twist boards strengthen your core, so they may help you avoid back injury . A strong core is also important for physical strength and balance. Twist boards may help you achieve some muscle tone and whittle away fat around your midsection.
Twist boards strengthen your core, so they may help you avoid back injury . A strong core is also important for physical strength and balance. Twist boards may help you achieve some muscle tone and whittle away fat around your midsection.