Carve out just nine minutes a day, five to six times a week, and watch how your core transforms.

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According to experts, it takes just four core workouts to absolutely rip your top half to shreds, so you can get stronger.

There’s a lot of debate about weight machines in the fitness world. Some people gravitate towards them because they seem a heck of a lot easier than cranking out some reps with a pair of dumbbells or ...