Add Yahoo as a preferred source to see more of our stories on Google. Man doing the plank. Crunches can be great if you’re looking to get washboard abs. But when it comes to core strength, there’s a ...
Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images I’ve ...
People reports that when Kim and Melissa started working together, they focused on simple planks and shorter ab workouts, but have since graduated to the intense moves. *Leans in* "We've moved on to ...
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