30 day plank challenge fitness planner printable

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Printable exercise challenge | The plank exercise works the deep core muscles – the ones that pull the abdominal area in flat. Start with a 10 second plank and work up to 100 seconds. There are fitness planner stickers for every day of the challenge, plus instruction sheets for doing the challenge and for sticker printing and manual cutting | Exercise planner printable from My Fitness Planner

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