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16 Plank Variations to Strengthen Your Core outsideonline.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from outsideonline.com Daily Mail and Mail on Sunday newspapers.
Planks are a great exercise for strengthening your core, but what muscles do they actually work? This article explains the benefits of planks, which muscles they target, and the three most effective variations, so you can get the most out of your workouts. ....