Perform this workout anytime, anywhere.

If you have 10 minutes to spare, you have enough time to tackle this effective core workout that puts you through two rounds of fast-paced exercises to target your upper and lower abs.

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With more built-in recovery and zero drop in intensity, Waz Ashayer says this new program may be the most extreme home fitness program yet. From flip phones to frosted tips, the 2000s are back. And ...