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Sound off... any other roller derby players use Fitness Blender? If so, which videos do you gravitate towards?! Looking for ones to keep hitting those fast twitch muscle but also maintain and grow power!!
Any other roller derby players here?
Sound off... any other roller derby players use Fitness Blender? If so, which videos do you gravitate towards?! Looking for ones to keep hitting those fast twitch muscle but also maintain and grow power!!