Lie back on the bench, shifting the dumbbells to your chest with your elbows at a 45 degree angle relative to your torso.

But don't despair - because it might just be time to add the best core home workouts under 20 minutes to your rotation.

The controlled, precise movements of Pilates not only target the superficial ab muscles but also engage the deep stabilizing muscles, leading to a strong and defined midsection. Here are the five best ...