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Obliques Side-to-Side Abs Exercise with the Stability Ball: Right and Wrong Way to “Trim the Waist”

Kymberly Williams-Evans, MA and Alexandra Williams, MA

trim that waist. Many exercisers want to know how to “trim the waist.” As fitness pros, we mentally translate that request into technical terms, which means we start thinking of exercises that target the obliques. One great way to do this is with the side-to-side oblique move using the stability ball.

The obliques come in two flavors: external and internal. We have a nifty graphic and a video demo of oblique crunches (no ball needed, and do NOT read that in a pervy way) in our previous post “Wrong and Right Way to do Oblique Ab Crunches.”

The external obliques run diagonally, forming a V in front. Imagine you’re putting your hands into a vest or front coat pocket. The internal obliques run at right angles to your external obliques and form an inverted V. Put your hands on your hips with your thumbs in front and fingers behind, pointing down as if putting your hands into back pockets.

Grab your mat or towel (or marginally clean area of your rug) and stability ball, and follow along with us in this video that demonstrates the right and wrong way to trim the waste from your waist!


What is your favorite exercise for the obliques? Trainers & instructors, feel free to add a link to your posts on this topic.

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Photo credit:  Hey Paul Studios (blue & red corset)

About Fun and Fit

Get practical exercise advice, your fitness questions answered, and cutting edge health edu-tainment that is accessible and doable from long time fitness experts, Kymberly Williams-Evans, MA and Alexandra Williams, MA. We have taught on land, sea, and airwaves for 3 decades on 4 continents. From writing to speaking, emceeing to hosting a radio show, reviewing products to teaching classes, we believe that little steps turn into big paths. Move a little more than the day before. FitFluential Ambassadors and award-winners both online and off.

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12 Responses to Obliques Side-to-Side Abs Exercise with the Stability Ball: Right and Wrong Way to “Trim the Waist”

  1. Kim May 2, 2013 at 4:53 am #

    Oh – I’m gonna have to try this one soon!!

  2. Tamara May 2, 2013 at 6:58 am #

    Funny that you should post this today! I just shared Brad Gouthro’s stability ball video yesterday and commented that I love using this tool in my workouts!

    Here’s a link to a video I did once on the Stability Ball Russian Twist; one of my favourite ways to train my obliques on the ball (it also works glutes and shoulders; triple bonus!). Thanks for the invitation to share!
    Tamara recently posted..April’s Free Workouts-of-the-DayMy Profile

    • AlexandraFunFit May 2, 2013 at 1:40 pm #

      I love the ball, Tamara. Partly because I love the core benefits, and partly because I always leave my students (they are 30 years younger than I) in awe of my strength on it. Yup, I have a vain side. Love your video. Thanks for sharing it.
      AlexandraFunFit recently posted..Fun Fitness Solutions: Guest Post By Emma FranklinMy Profile

      • Brenda Grabko May 14, 2013 at 8:09 am #

        Hello ladies, I am a newly certified instuctor working with older adults, I am specifically looking for stability ball exercises for the group. Any advice, links or website leads?



  3. Elle May 2, 2013 at 7:23 am #

    Just got a stability ball. Very timely for me.
    Elle recently posted..Energy to Burn… Working Hard and Reaping the ResultsMy Profile

  4. deb roby May 2, 2013 at 8:52 am #

    I’m a fan of Russian Twists. However, obliques are primarily stabilizing muscles that keep the torso firm when put under a challenge. So to work them in the way they are intended to work, I do lots of farmer’s walks and suitcase carries!
    deb roby recently posted..Preview of FitBloggin13. Dealing with InjuriesMy Profile

  5. AlexandraFunFit May 2, 2013 at 1:47 pm #

    Thanks for sharing Deb. Do you have a link to any posts or videos you’ve done for the farmer’s walks or suitcase carry?
    And what Deb is alluding too ever so obliquely (hahaha, I am such a wordmeistress), is that trimming the waist is really mostly a matter of doing cardio. Toning the waist is oblique work (rectus abdominis & transversus are for another day).
    AlexandraFunFit recently posted..Most Common Fitness Questions Relevant for Baby BoomersMy Profile

  6. Jody - Fit at 55 May 2, 2013 at 7:25 pm #

    I do this move without the ball so will add the ball but I do bicycles & crossover crunches on the stability ball & various other ways.. I don’t add weight – I get boxy. I also do your move but in a diagonal type of move. Since I have no videos. I can’t show you. :)

    Great video!
    Jody – Fit at 55 recently posted..Why I DON’T Eat PaleoMy Profile

  7. Calla Gold May 8, 2013 at 10:28 pm #

    As usual, great video! And nothing’s wrong with a little vanity now and then.

    Calla Gold

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