“The ball’s unstable surface makes your body work harder to stay balanced, which means you’re engaging not just your abs, but also deep core muscles like the ones that support your spine and ...

Ana, who boasts more than 3.3 million followers on Instagram, flexed her abs in a workout selfie while rocking a stunning two-piece, all-black yoga fit. MORE: LiAngelo Ball's new gf Rashida Nicole ...

While sitting on a yoga mat with your legs bent and feet flat on the floor, pick up a medicine ball and hold it at your chest. 2. Next, rotate your upper body side-to-side, inhaling on one turn ...

Yoga has proven benefits for overall mental and physical health, including strength-building. A strong core can produce defined abs, improve your balance, and help you avoid injuries. Moves like ...

Of course, there weren’t any visible changes to my abs after a week of stability ball planks, but I definitely felt like I’d worked my core hard, and was surprised by how difficult the ball ...

So grab that yoga ball and give this workout a try! More from Tom's Guide Forget Russian twists — 5 standing ab exercises that sculpt your core muscles using one kettlebell ...

Base. Most ball chairs include some type of base. This can be as substantial as an entire chair with a backrest and wheels or as simple as a ring that sits on the floor and keeps the ball stationary.

Ana, who boasts more than 3.3 million followers on Instagram, flexed her abs in a workout selfie while rocking a stunning two-piece, all-black yoga fit. MORE: LiAngelo Ball's new gf Rashida Nicole ...