Tip: Stability Ball Plate Crunch

To build your abs, you need to add resistance, just like every other muscle group. Here's a great way to do it.

Keep your knees bent at roughly a 90-degree angle throughout and flex and extend your spine with control over the ball.

Hold the plate straight above your shoulders and reach your arms straight up toward the sky.

Focus on making your knees drive the motion (bending and extending), not your abs.