Abs workouts do not need to be long to be very hard, but even so when a video popped up on my YouTube feed claiming to be the "hardest abs workout ever" and it was only 10 minutes long ...

That's why you need the best ab workouts - and a strong core as a whole ... alternating between left and right. A) Lift the ball straight up overhead (not behind you). Keep your back straight ...

This article was medically reviewed by Audrey Bowman, RRCA certified running coach, BS in Exercise Science, and fitness instructor at Relentless Runners in Knoxville, TN. Do this ab workout two to ...

If you're running out of inspiration for your ab workouts and you have yet to find ... As Filly notes, you can also prop up your feet on a physio ball, or use sliders or socks on a smooth surface.