Ninja grannies fight for their black belts in karate

Friends Isobel and Sheila picked up karate four years ago, and have now earned their black belts.

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Four years ago, Isobel and Sheila decided they’d take punches along with their pensions and began taking karate classes.

What started as a hobby became a passion for the retirees, and now they’ve both achieved one of the highest ranks in the martial art.