These are the best core exercises you’ve never done, and they’ll reveal the abs you never knew you had.

Nothing says “fit” like a wash-board stomach. And nothing makes achieving one harder than doing the same exercises every week. “Your body adapts and stops responding to exercises over time, stalling your progress.”That’s why it’s important to regularly hit the refresh button on your ab routine. “Adding different exercises to your workouts gives your muscles a new stimulus and triggers growth.” The result: head-turning abs in significantly less time.

✔But attracting more attention at the beach—and in the bedroom—isn’t the only reason to pursue a chiseled midsection. “A strong core helps you maintain the optimal alignment of your pelvis and torso in everything you do, whether you’re going big at the gym or carrying a cooler across a campsite.” “If you can’t maintain that alignment—characterized by a natural S-curve in your spine—your joints are thrown out of whack, increasing your risk of injury and limiting the amount of weight you can lift.”

✔This summer, take a break from your usual ab exercises and weave two of these moves into each of your weekly workouts. Which two you pick doesn’t matter as long as you choose a different pair each time. Then prepare yourself for the result: a six-pack that goes everywhere you do.

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