Today's ab routines are more versatile than ever. Sure, you can slog through sets of situps and rounds of planks over and over again. But, more and more, core workouts incorporate tools like Swiss ...
Trainer: This One Tool Will Carve Out Your Abs for Less Than $20 originally appeared on Men's Fitness. You can find expensive gym machines that target every part of your body. They're great—but often ...
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