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30 day 5 minute plank challenge | Plank workout, 30 day plank challenge, Five minute plank
Julie on Twitter: "Plank with PERFORM! Take the 30 Day 5 min Plank Challenge and build up to a 5 minute plank! Who's in?! Show us your progress #ProfilePerform https://t.co/unqzOjRVxR" / Twitter