Stand with your feet shoulder-width apart, knees slightly bent. Hold a medicine ball by your right hip. Use your hips and arms to swiftly arc it up in front of the chest and throw it to the left. You ...

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To get your abs to pop, you need to lose body fat and strengthen your abdominal muscles. While doing crunches and situps may ...

Naturally, your go-to core workout might include a variation of sit-ups, crunches, and planks. Because as a runner, you know ...