Planks can help work your core muscles, as well as your upper and lower body. There are different types of planks that may have slightly different benefits. The plank is a classic exercise that works ...

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Once again, 30-day fitness challenges are all the rage on social media. Whether it's a family workout challenge, a flat-abs-in-30-days challenge, or a popular 10-minutes-of-yoga-a-day-for-30-days ...