Yes, you can hold a plank for hours upon hours.
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Yes, you can hold a plank for hours upon hours.
Read moreYes, you can hold a plank for hours upon hours.
Read moreThe plank is a standard core training exercise, one that
Read moreYou think planking is hard? Try this killer variation that
Read moreMy daily planking habit had an improbable start: a tweet.
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