Updated: May 13th, 2020 No matter how much cardio you complete, it’s impossible to tone you stomach without a little targeted core strengthening. Not only do planks improve core strength, but they also play a key role in the strength of your entire body and performance on the run. Download this 30 Day Plank Challenge … Read More
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The Ultimate 30 Day Plank Challenge | Free Printable for Beginners
