We get it: You don’t always want to do crunches or planks or even use gym equipment to work your abs. Luckily, you don’t have to. If you’ve never thought about working your core while standing, you should. It may even be more effective because your core muscles aren’t just the ones you see in the mirror: They wrap all the way around your body—from your “six-pack” abs to your obliques (which hug the sides of your trunk) to the muscles that stabilize and support your spine.
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