“The Rachel” may have sent countless women to the salon — but Jennifer Aniston’s abs are a truly timeless inspiration. So it’s no surprise that Dani Coleman — VP of Training at Pvolve and Jen’s own ...

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Enter any gym, and you’ll see the same core workout: crunches, situps, ab machines, and endless twisting exercises. The logic seems obvious—if you want stronger abs, more visible abs, you train them ...