There's so much to love about ab workouts, and I'm not just talking about how they strengthen your core muscles and give you that hurts-so-good burn in your midsection. Beyond all that, one great ...
It's not just about crunches — you'll be doing bicycles, planks, knee pulls, leg raises, and more moves that you will definitely feel the next day. Ahead, you'll find a selection of 20-minute ab ...
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