Add Yahoo as a preferred source to see more of our stories on Google. Man exercising with dumbbells. While sit-ups and crunches are an effective way to train your core, you can work your abs just as ...

Add Yahoo as a preferred source to see more of our stories on Google. Woman smiling and holding light weight dumbbells out in front of her in a gym. Sick of grinding through sit-ups to strengthen your ...

You're not alone if you wince when you think about doing a plank, sit-up, or crunch. I feel exactly the same way. Whether it's the burning in my abs or the requirement to be at one with my yoga mat, I ...