I did 90 plank pull-throughs every day for a week — here’s what happened to my abs

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Plank pull-throughs are a moving plank variation that activates the same muscles and uses a side-to-side pulling motion to work your arms and back. We did 90 reps a day for a week.

I did 90 plank pull-throughs every day for a week — here’s what happened to my abs : Read more