Celebrity trainer Simone De La Rue just added another workout tool to her arsenal. The founder of the Body by Simone fitness method and trainer to Jennifer Garner, Emmy Rossum, and Rosie Huntington -Whiteley, among others, revealed her "new toy" Monday-parallel bars-in an Instagram video.

You can check out the video, via @bodybysimone, here:

De La Rue is not the first-and definitely not the only-fitness guru to board the parallel bar train. The gymnastics is a building equipment, which comes in several variations under several different monikers, including dip bars, Equalizers, or parallettes, has been popping up on Instagram in recent months. Search #dipbar on Instagram, and you'll get more than 3,200 results, #equalizers bring up more than 3,800 hitsm and #parallettes, more than 20,000 .

The variety of content you'll see is a testament to the tool's versatility in gyms and at home for a variety of strength-training and bodyweight exercises.

Here are some of the fun and unique ways that people are using the parallel bars:

As you can see, the bars have tons of different uses. That also means they can offer many different benefits.

"They are very, very versatile, " Faith Davis, and Utah-based trainer who uses the Equalizer parallel bars in her own workouts, tells SELF of the equipment. "You can use them to strengthen every muscle group, do cardio, and even stretch."

Davis has been working out with parallel bars for more than two years. She actually got them up. "It's hard to work with your shoulders." "But with the bars, you can target this area by doing inverted rows, which can be very basic or more challenging just by the way you hold your feet."

With parallel bars, you can creatively use your bodyweight to get in many different. You can also lay down the bars, for example .

They're also great for core work, like L sits or basic knee raises (feature in De La Rue's video above and explained below), and stability example.

One of the bars' biggest benefits, says Davis, 81 as well as your smaller stabilizer muscles. That's because you perform classic movements on the bars, your base is stabilizing muscles. Parallel bars are great for both beginners

Parallel bars are great for both beginners and experienced exercisers.

"I have beginners on them all the time, "says Davis of the bars. Because the tools allow you to modify or progress as needed, "beginners could use them as much as an advanced person."

If you do not have the full push-up, for example , you can do a modified version of the movement by placing your hands on the bar and angling your body out from there, says Davis. This will reduce the pressure on your upper body and core while alleviating the pressure on your wrists, she explains.

You can also use the bars to do an amped up version of a push-up, Stephanie Mansour, Chicago-based certified personal trainer, tells SELF.

Doing dips [a basic parallel bar movement where you lift your feet using the just your arms] works the same muscles as a push-up-your-shoulders, arms, upper back, and core-but is "more difficult, you have to support your entire body. On the bars, the part of your hand. By comparison, in a push-up on the floor, your toes, plus your whole hands-including your palms and all five fingers-are helping to support your body.

"Dips are one of the most basic movements you can do on the bars, and they're also on the same way, using so many muscle groups, "adds Davis.

Because dips do require serious upper-body strength, she start beginners start with their feet on the ground, which will help them build up the necessary strength in a safe way. The further apart your feet, the easier the movement will be; to increase the difficulty, move your feet closer together.

The positioning of your body during a dip. If you want to work your triceps, for example, do dips while keeping your torso totally vertical, says Mansour. This is a more difficult version of tricep dips. Says Mansour, who likens this to a bench press.

De La Rue's circuit is great for parallel bar, beginners, says Mansour, and it simultaneously targets your upper body and core. Here's how to do it.

Lower Ab Knee Tucks

  • Stand squarely between your parallel bars and firmly grip the middle of each bar with your hands.
  • Squeeze your lower abs right below the belly button and use these muscles and your lower back to lift your legs off the ground, bending at your knees. This is the starting position.
  • Keeping your arms and elbows straight, bring your knees up and in toward your chest.
  • Pause for a moment at the top of the movement, then slowly lower your knees back down to the starting position.
  • This is 1 rep. Do 8 reps.

This move works your transverse abdominis (the deepest ab muscle that wraps around your sides and spine) and rectus abdominis (what you think of when you think "abs"), as well as many major muscles in your upper half, including your pectoralis major (a thin, fan-shaped muscle in the chest), pectoralis minor (a thin, triangular muscle in the upper chest), deltoids (shoulders), triceps, and biceps, says Mansour.

For this move, and the others in the circuit, lowering your knees back down is "as important as bringing them back up," says Mansour. "Make sure you are slow and controlled [as you are lower back down] and that everything is engaged in the exercise rather than thinking about this as a full release. It will feel harder on the way up, but the key is to make sure you are not swinging when you are coming down. "You should also think about keeping straight (not arched) spine.

Oblique Twists

  • Get in the starting position described above with your hands gripping the parallel bars, your knees bent, and feet lifted off the ground.
  • Keeping your arms and elbows straight, squeeze your lower abs and lower back to lift your knees up and over. Pause for a moment, at the beginning of the movement. This is 1 rep.
  • Do 4 reps to the right side. Then do 4 reps to the left side.

This move targets all of the muscles worked in the prior move-as well as the internal and external obliques (the muscles on the sides of your stomach, says Mansour.

Straight Leg Lifts

  • Stand squarely in between the bars and firmly grip the middle of each bar with your hands.
  • Keeping your legs and elbows straight, squeeze your lower abs and lower back to lift your feet off the ground. This is the starting position.
  • Keeping your legs straight, you have a 90 degree angle with your torso and legs. Here and then slowly lower your legs back to the starting position. This is 1 rep.
  • Do 8 reps.

This move is essentially just a harder version of the knee tucks, says Mansour. You're working out of all the same muscles, but it will feel more difficult because of your legs. Remember to engage your core and lower back throughout, and keep moving down the part of the movement. Nice and controlled.

If these moves are challenging for you, do not sweat it, says Mansour.

" Parallel bars can be difficult even for Olympic gymnasts, "she explains, because you really have to have control of your body. If your back hurts as you use the bars, you are probably losing control, as you bring your legs back down, or you're not using your core enough on the way up, explains Mansour. If you try correcting these issues, you must do it yourself, and you must do it yourself. the bars a whirl again.

Also: If you have a wrist, a shoulder or a rotator, a cuff injury, these moves are not for you, says Mansour. "There is more room to go off the balance here just because your body is swinging and there's less stability," she explains.

Ready to try the bars for yourself? Here you can find them.

Certain gyms and public parks may have the bars, but because they're not ubiquitous (yet!), You may consider buying your own set online. Lebert EQualizer is a popular, reputable brand, and you can find many others on Amazon.

"If you really want to work out all of your muscle groups and both your space and your bank account are limited, bars are one of the best pieces of equipment, "says Davis.