Forget endless sit-ups and crunches. This standing core routine strengthens your abs, improves balance, and builds functional fitness without ever getting on the floor.
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Forget 'basic' crunches — here's 3 ab exercises you need to try, according to a functional training coach
Say goodbye to basic crunches and hello to three muscle-torching crunch variations to build core strength. For this workout, you just need one of the best yoga mats and a resistance band or loop band ...
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