Buyer's Guide. You get all the benefits of a stepper, bench, and balance trainer in one device. The Terra-Core looked very similar to a Bosu ball, and at first glance I was confused by the hype. Put your hands on your hips (as pictured) or behind your head. Made in the USA. The device is often used for balance training. it's the soulmate of weight bands everywhere. Get ready to feel the BURN and build that iron stomach. Standing on a dome is good for foot and ankle strength, but it’s not a great fitness or performance tool. (I used a 15. $100. Best Balance Board for Beginners: REP Balance Ball Trainer. The ball debuted in 2000 and became a popular fitness training product. Balance boards and discs are a great way to introduce balance training to younger. In this article, we’ll highlight some of the best Bosu balls, and provide you. The Terra-Core is really quite a sophisticated and highly compact piece of multi functional equipment and with its integral handles and rails and its 34 lbs weightiness the Terra-Core can even be used as a dumbbell. You might also know them as yoga balls, balance balls, physio balls, pilates balls, or even Swiss balls, but don't let that name confuse you because the balls aren't actually Swiss. The inflatable top surface is great, but I actually think it’s the base of the Terra-Core that makes it different. $15. The Terra Core is essentially a larger version of a Bosu ball, but with handles and more versatility. The Russian Twist is widely used, so incorporating the Medicine Ball increases the difficulty and engages the abdominals as well as the upper body. A reading of 130 to 139 mm Hg systolic or 80 to 89 mm Hg diastolic. A FULL BODY BOSU BALL PILATES WORKOUT//In this 15-minute workout, you'll strengthen the core while creating mobility in the spine. Look around any health club today and you see BOSU balls used by members and fitness professionals as a training modality to enhance an exercise program; in particular, functional fitness and balance training. The Terra Core is essentially a larger version of a Bosu ball, but with handles and more versatility. Hold a dumbbell at chin or chest level. B. 5 LBS of multi-dimensional load (ballast) to keep it from wandering during your workout. When it comes to balance training, BOSU ball must be one of the most recommended and stylish tools. Then, grab the opposite edges of the. It has an inflated side and a flat side, both of which you can use for different exercises. Balance boards. Slowly lower down until left knee is a few. Bosu. When focusing on these compound lifts, making small changes to your set-up, foot stance, and the equipment you use can impact your stability, muscle activation, and. Adding BOSU exercise moves will help you get used to using a BOSU balance trainer. Designed with a quadrant to favor body positioning, improved grip, and movements. You can slowly move up and down in the squat, or test your strength and balance in an extended squat hold. $27900 About this item TERRA-CORE is one of the most versatile pieces of exercise equipment you can own. BOSU Ballast - has sand to from moving. It regularly crops up in functional training,. . Is. C. Starting Position: Place a stability ball against a wall and gently lean against it, positioning the top of the ball into the small of your back, but making contact with your tailbone, low- and mid-back. Use your hamstrings to stop the ball from rolling away from you. “That's a much more natural. By showing how to adapt familiar exercises—such as lunges, crunches, leg lifts, push-ups and many more—to the BOSU®, this book transforms simple moves into fun, challenging and highly effective exercises. but what do Coach Chris and Coach Brian of. . Thus, the BOSU challenges individuals to build strength and balance simultaneously. Squats are great for strengthening the glutes, quadriceps and core. However, it’s kind of like a set of training wheels on a bicycle. ) Diameter: 65 cm. “The Bosu ball and bands help to increase the activation of your glutes as well as your core”, writes Khloe. You can use the Bosu ball in a million different ways, though. *Here are the 15 MUST-DO Bosu Ball Core Exercises that will get you STRONG, Shredded Abs. Because you’re still doing a regular squat, and so you can still use the primary movers to power through. Dimensions: 26" diameter, 8. When utilizing devices such as a stability ball, BOSU ball, or the Terra-Core, the user is forced to actively engage their core musculature due to their body weight displacing air inside the bladder of the device, causing which of the following? Perturbation. , What term refers to the integration of motor control processes through practice and experience, leading to a relatively permanent. Was: $125. Something to keep in mind is that they do have a slightly different focus. Lower your butt back down to the floor and repeat. Squeezing your glutes, lift. This article will mainly focus on the wobble board. Bosu. The BOSU consists of an inflated rubber hemisphere attached to a rigid platform and is one of the best devices available to develop core development, stabilization and balance. A more. The Terra-Core is 28 lbs in weight and offers many different workouts. Training on stable surfaces overloaded and best recruited core muscles. With our On-demand classes & Plank Games you can choose from over 200+ workouts including strength, balance, cardio, sculpt, prenatal, postpartum, yoga, and. Adding weight and performing. ) Diameter: 65 cm. To use the Bosu ball, lie down so your lower back is resting on the ball but keep your feet on the floor. Place your hands on either side of the BOSU ball and apply body weight. 93 %. The above findings were supported by the study done by Lizardo F. Don't worry, all you need is a bosu. 99, Amazon) Best for Core Strength: Stealth Core Trainer ($149, Amazon) Best for Beginners: ProsourceFit Core Balance Disc Trainer ($19. It takes up much less room than the stability ball, is easier to store, and is safer around children. And yes, it is still a functioning balance board—just a dangerous one. e. Bosu Ball Sit-ups. ago. Main outcome measure(s): Static balance from an instrumented force plate, dynamic balance as measured via the Star Excursion Balance Test, and ankle force production in all 4 cardinal planes of motion as. The BOSU Balance Trainer, often shortened to just BOSU ball, was invented in 2000 by David Weck as a more stable alternative to the traditional stability ball. To test it, sit on the ball and make sure your hips are level or just slightly higher than the knees: 55 cm: 4'11" - 5'4". A study of "confidence" suggested that there is a subjective bias about which devices are easier and which work better for balance training. This is also an excellent way to make easy exercises more challenging; if you can do a full set of pushups. Smooth, non-skid, non-marking base. Además, el hecho de hacer, por ejemplo, abdominales sobre el bosu hace que a los esfuerzos habituales para estos ejercicios se sumen los necesarios para mantener el equilibrio. The Bosu is an iconic staple in balance training. How do they compare in features and which one is right for you? A Bosu Ball is typically the. Well, according to SportsRec, there isn't one. 00. injury prevention, especially. *FREE Downlo. Don't worry, all you need is a bosu stability ball. SHOP AMAZON NOW #2: BOSU Balance Trainer BOSU Balance Trainer: The BOSU Balance Trainer is a versatile and popular option for home use. Hinge forward at hips; bring BOSU Ball down to the floor. BOSU Ball Balance Board. Cross your right ankle over your left knee. We would like to show you a description here but the site won’t allow us. The 7 Best Balance Boards. Buyer's Guide. This definitely is an advanced level exercise but you could do this without the extra weight as an easier alternative. Added texture ensures you won’t lose your grip. . 12. Drawbacks of the BOSU. Learn more about how to do swimming core exercises with t. Like these Workout Lessons !!! Download our official fitness app out these Top Rated Workout Essentials: Shake Weight Dumbell:. Bosu Ball oblique crunches focus on the abdominal muscles located on the side of the hip. Well, according to SportsRec, there isn't one. If that’s not enough, Terra-Core also comes with notches where you can attach your favorite resistance bands. 9. Heisman. Balance training. The Terra core ball is is perfect for cross fit or aerobic exercises. Mountain climber. Repeat. If you've ever seen the classic blue half ball at your local gym, yep—that's a BOSU ball, a dynamic inflated workout device that works "Both Sides Up". The. How to Use A Medicine Ball In a Seated Oblique Twist. Ask for alternate exercises to the bosu and do those instead, or the same without the body like pushups etc. Athletes who are required to compete on unstable surfaces can consider occasionally training on them. I jump onto it, ball side down and flat side up, with both feet (which takes some practice) and do squats and throw a medicine ball to someone on another BOSU ball. Workout on the Bosu Ball / Body Dome. 3 sets/ 20 reps on. Due to high demand, your Terra-Core will ship in 2-3 weeks. It is able to accommodate weight routines and impact during workouts. Just when you think your abs can rest, you have to keep them flexed while in the elevated side-bend position. Bosus are usually 10 inches high and 26 inches around, and similar to a wobble board, Bosus' bubble shape creates enough instability to challenge your core. Bosu Ball Bicycle Crunches. BOSU Balance Trainer Profi. The BOSU ball, being an unstable surface, makes for great training equipment for enhancing stability especially of the core muscles. RMT® Club. Also considered are the shapes of the surface. There are still a few Bosu Ball core exercises that focus on both abs and obliques. Fitterfirst Classic 16inch Balance Board. In addition to strengthening your muscles, you can increase. This mainly consists of any training that is performed on a surface that has some movement — usually on something like a stability ball, various rollers, BOSU® balls, and a host of other equipment. If you need a little assistance, use your hands and push off your legs. Proper abdominal crunches on a stability ball allows for: a. There are many differences between StrongBoard Balance and air-filled bladders such as Bosu™, Terra Core™ and Step. Your feet should be in line with your hands, and your body should be straight from head to heels. BOSU stands for Both Sides Used and the crazy thing is, you can flip it dome side down for another type of challenge; it's perfect for squats, ankle rotation exercises,. it's over 250 exercises to help you reach your goals. Expensive. With its innovative "Reactive Dome™" and reinforced platform, the BOSU® Elite generates powerful elastic resistance, unlocking untapped muscle fibers. You can start by just lifting your foot a few inches off the ground, then lift your knee up to hip height as your balance improves. Examples include treadmill for cardiovascular health or dumbbells for strength and hypertrophy. 7 4. BOSU, which stands for "both sides utilized," has a flat platform on one side and a squishy rubber hemisphere on the other, making it look a little bit like a stability ball cut in half. Medicine ball chest pass. Begin in a push-up position with your hands gripping the outer edge of the ball, legs straight back behind you. 0 ($190) Best for experienced trainers: Revbalance FIT 3-in-1 Exercise Balance Board System ($200) Best portable: Everymile Wobble Balance Board ($40) Best for. . To get the most benefit from this exercise, ensure your body is in a straight line from head to toe, your hips are square (parallel to the floor), and your abs are tucked in and braced. Bosu stands for “both sides utilized,” as you can execute exercises on either the flat side or the round side of the ball. 4 850 –. 00. What to Know About Balance Boards. it's a multifaceted group-x machine. Put your hands either across your chest or behind your head. Work up to three sets of five reps. If you've ever seen the classic blue half ball at your local gym, yep—that's a BOSU ball, a dynamic inflated workout device that works "Both Sides Up". The BOSU ball gets a bad rap, primarily because most individuals don’t understand its purpose. You get all the benefits of a stepper, bench, and balance trainer in one device. Powertrain Yoga Stability Disc Home Gym Pilate Balance Trainer Blue. It’s a low-impact option that allows the body to do the same exercises with a decreased level of force. A BOSU Balance Trainer (or BOSU ball) is a fitness training device, invented in 1999 by David Weck. By the end you’ll know the best BOSU ball for your home gym. Barbell chest press d. We thought it was only fair to put this product to the test and review its main features, price, benefits and ultimately answer whether or not this piece of fitness gear is worth buying. of the rectus abdominis (upper and lower part) and external oblique during sit-ups performed on BOSU ball(s). Slowly lower down until left knee is a few. Stand with feet at hip-width distance holding BOSU Ball flat side to chest. 7 BOSU ball workouts Tips on How to Do Bosu Ball Squats. Medicine balls. Exercise has beneficial effects on the physiology and health of both the mother and the developing fetus. At 14 pounds, it's can be used to add weight to an exercise. Prone Opposite Arm-Leg: This is performed by getting on all fours with your hands on the ground, and your knees on the bubble side of the BOSU ball. The Terra Core fitness tool is designed to be like a combination of a larger more stable Bosu ball with attached resistance bands to completely a full workout. Best Overall Balance Board: Bosu Ball. This variation adds some instability into the mix, which makes your core work harder throughout the move. The Pro version's gray base is smooth but made from a non-skid material that won. The BOSU® Helm allows you to utilize the Balance Trainer to transform standard pushups and planks into stability training exercises. Unlike our Original Balance Trainer, the BOSU® Elite focuses on resistance training, rather than instability training. 29 inches: 6-feet to 6-feet, 7-inches. Unlike our Original Balance Trainer, the BOSU® Elite focuses on resistance training, rather than instability training. Sit with your chest up, shoulders back and core tight. Take both the handles of the resistance band on both your hands. Recently, resistance exercises performed on an unstable surface have become part of athletic training and rehabilitation. Snatch-Grip RDL. Base is equipped with eight anti-skid feet, so this dome ball stays put while you workout. Device or tools that are designed to enhance an exercise or movement to create a desired outcome by their inclusion. Terra Core fitness is a company that currently has two different all-in-one home gym tools for sale – the Terra Core and Terra Glide. It is ideally used for boot camps and small group training most. Unfortunately, this rule of thumb won’t always hold true. They are supposed to help train your core, improve your balance, and make practically any exercise more effective. 00 out of 5. Place your left leg on the platform side of the ball. A BOSU Balance Trainer (or BOSU ball) is a fitness training device, invented in 1999 by David Weck. The flat side can be used as an aerobic stepper, and also comes with pushup handles that can also be used to row or. Yvette. Starting Position: Place a stability ball against a wall and gently lean against it, positioning the top of the ball into the small of your back, but making contact with your tailbone, low- and mid-back. When utilizing devices such as a stability ball, BOSU ball, or the Terra-Core, the user is forced to actively engage their core musculature due to their body weight displacing air inside the bladder of the device, causing which of the following? Perturbation. Place Bosu ball on ground in front of you, then step back into a plank position. BOSU Core Sliders. The BOSU trainer is also great to use at home, especially if space is a concern. BOSU® Ballast® Ball: Unique exercise ball with 6-sided surface for proper alignment and positioning + 2. 1. It makes other balance trainers like the Bosu Ball seem like a one trick pony. Sets And Reps – 3 sets of 12 reps. Jump back into plank position with shoulders over wrists, and perform a push-up. It’s a balance trainer that doubles as a fully functional bench. Gym Balance Core Ball with Resistance Strap. Twist your torso to your right as you squeeze your abs, bringing your left elbow to your right knee until they touch (if you can). 8. Then lift one arm and the opposite leg simultaneously and extend until completely straight. Contract your abs and sit at about a 45-degree angle. 8 Best Balance Training Tools for Better Stability and Core. Start to push your hips back as you lower into a squat position. Have a partner stand 5-10 feet in front of you holding a lightweight med ball. Its half-ball design allows for a wide range of exercises, from balance training to strength training, making it a great choice for users looking to work on multiple fitness goals. 30 QRecently, resistance exercises performed on an unstable surface have become part of athletic training and rehabilitation. Base is equipped with eight anti-skid feet, so this dome ball stays put while you workout. This will help you with your coordination and core strength because you are having to keep everything as stable as possible and lifting the weight can be quite challenging. Firm & Tight Mini Band AT HOME WorkoutsBody Balance Trainer Workout Seriesnon-skid, non-marking base. BOSU balls can be used to perform various lower body exercises, such as squats, lunges, and single-leg RDLs. After looking closer, I realized it is designed very differently and does not even compare. Exclusions Apply. Two people in a gym using BOSU balls. BOSU Balance Trainers, BOSU Elite, or BOSU Ballast Balls. Increased flexibility: Squats on a Bosu ball can help to increase your flexibility, as your muscles are forced to work through a wider range of motion. e. Weighted Squat and Twist on a Bosu Ball / Terra-Core. No core activation: Researchers are split on the theory that sitting on an exercise ball increases core strength. bridging, static plank) and lower-body strength exercises (e. . Today, Brady uses a Bosu ball while performing planks to add in. Additional Exercises. Firm & Tight Mini Band AT HOME WorkoutsBody Balance Trainer Workout Seriesmultifunctional exercise equipment assists in core training, improving mobility, high-intensity cardio training, and can even be used for rehabilitation and physical therapy. To perform, sit on the Bosu ball, balancing on your glutes, and lean back slightly. 994. The concept behind this simple training tool is that exercising on an unstable surface engages both small and large muscles. The BOSU® Home Balance Trainer is designed for the casual home user. The most stability work that the majority of people would need can be easily replicated by unilateral work like split squats, step ups, and single-arm farmer walks. 99 $ 71 . The Terra Core is essentially a larger version of a Bosu ball, but with handles and more versatility. Take a slight pause at this position and perform the same procedure again. Straighten the left leg out in front of the body, keeping it long and lifted. It’s not meant to overload the prime movers but instead to activate the smaller stabilizers. It’s revolutionary in terms of what it can do compared to the Bosu Ball can’t. Comes with downloadable exercise and video. Build More Strength with a Balance Trainer Half Ball. Also known as the Bosu ball, the kit looks basic, but it’s brilliant for assisting with all functional training. As you can see, the BOSU ball is neither good nor bad. Yvette's Total Fitness HIIT Cardio involving bodyweight, free weights and a BOSU Ball! Dumbbells needed: 8, 10s and 15s. Tips on How to Do Bosu Ball Squats. 00. Además, el hecho de hacer, por ejemplo, abdominales sobre el bosu hace que a los esfuerzos habituales para estos ejercicios se sumen los necesarios para mantener el equilibrio. However, these athletes are misinformed if they believe they are overloading their core. 0001 and in core stability with a p-value. , Dyna Disc, BOSU ball) did not provide sufficient challenges to the neuromuscular system in highly resistance-trained individuals. The 7 Best Balance Boards. Hold here and breathe for 30 seconds. I found one article stating an opinion that wobble boards are better than BOSU domes, because wobble boards are harder to use. With your arms at the same level as your shoulders, tighten your core and extend your legs. . The inflatable top surface is great, but I actually think it’s the base of the Terra-Core that makes it different than say, a Bosu ball or any other balance trainer. $14. 4 cm (10”) when fully inflated. (173) At the gym or at a home gym, the BOSU® Elite Balance Trainer is the perfect piece of fitness equipment for core training, pushups, cardio, conditioning as well as knee strengthening, ankle & foot exercises, balance training, and functional training. Author: Tanya Shaiko (6 years of Oly Lifting & Training experience) fact checked The bosu ball is a super versatile and effective piece of fitness equipment that can help you train several muscle groups and enables you to work on your stability and balance. You might also know them as yoga balls, balance balls, physio balls, pilates balls, or even Swiss balls, but don't let that name confuse you because the balls aren't actually Swiss. Take a step forward with one foot, planting your foot in the center of the ball. 5. 1. (2017), which states that instability training devices like bosu ball trainer undermines the principle of training, i. 00 out of 5. We thought it was only fair to put this product to the test and review its main features, price, benefits and ultimately answer whether or not this piece of fitness gear is worth buying. The ability to generate power and rotation in the lumbar spine. Jump back into plank position with shoulders over wrists, and perform a push-up. You can describe the Bosu Ball as the top of a stability ball attached to a flat surface. Photo courtesy of Terra-Core On the underside there are 2 separate sets of handles- a short pair oriented lengthwise with the Terra-Core that work great for push ups and a longer. IT'S A MULTIFACETED GROUP-X MACHINE. What Is A Bosu Ball? For those of you that don’t know, a bosu ball looks very similar to a swiss ball that has been cut in half. It’s a low-impact option that allows the body to do the same exercises with a decreased level of force. It's not meant to overload the prime movers but instead to activate the smaller stabilizers around the shoulders, spine, core, hips and feet. Lie on your right side, legs extended and stacked from hip to feet. Quadruped Bird Dog on BOSU Ball. Other Variations of the Toe Tap . Drawbacks of the BOSU balance trainer is rather heavy, and not something you can travel with. It is essentially a stability ball cut in half. 994. Studies confirm that Bosu Ball training is not superior to training on stable surfaces. Most important differences Bosu Ball vs stability ball Balance training. Alternate arms/legs for a set of 8-10 for each arm/leg. Study NASM CPT Exam flashcards. Powertrain Balance Trainer / Bosu Ball – Purple. Thera-Band Wobble Board. $ 129. It also allows you to incorporate balance training into nearly any other exercise. BOSU, which stands for "both sides utilized," has a flat platform on one side and a squishy rubber hemisphere on the other, making it look a little bit like a stability ball cut in half. NexGen Pro Balance Trainer. Agree. Using a single-leg stance works the leg in 360 degrees, meaning you have to control anteroposterior, lateral, and rotational movement while on the ball. There's a lot of advertising and promotion out there promising that unstable surface (e. Bosu balančná lopta (ak sa bavíme o originál BOSU) je pomôcka na balančné cvičenie, ktorá pripomína napoly odrezanú fitloptu. This ball includes a workout DVD and a poster featuring 16 exercises. Start standing with hands clasped in front of chest, right leg forward and slightly bent, and left leg resting on round side of Bosu ball, heel high. In fact any. Transfer your weight to your arms and kick your legs out behind you into a. Terra Core vs Terra Glide? The creators of the Terra Core also have the Terra Glide, but which one should you chose? Honestly it depends! The Terra. The object is to move as much weight as possible, which requires a very stable base – feet flat on floor, body tight, etc. Also considered are the shapes of the surface. 6. $99. In this article, we’ll highlight some of the best. a. Elevating your feet ups the difficulty by decreasing your leverage and increasing. Balance board is the term for a variety of balance equipment options like wobble boards, rocker boards, and roller boards. The activity of the rectus abdominis, external oblique abdominis, transversus abdominis/internal oblique. Best Budget Balance Board: Yes4All Wooden Wobble. Sit on the center of the ball and place your feet on the ground. Here are some practical uses: The BOSU can be a benefit as a part of a warm up or even a cool down as it can alter neural activity following massive strength work. Light and easy to carry. Step 2: Tap your feet out side-to-side, one at a time, engaging your core and glutes to minimize hip movement. extended, squeezing your glutes at the top. g. In this Terra Core review I’ll cover everything this versatile gym tool is good for. Gym Balance Core Ball with Resistance Strap. k. Pelvic floor musculature b. Squeeze your glutes as you push into the right foot to stand back. . . It also allows you to incorporate balance training into nearly any other exercise. By definition, stability is “to become stable, firm, or to be resistant to disturbance of equilibrium. Best Wobble Balance Board: NALANDA Core Trainer. NASM - Chapter 22 - Intro to Exercise Modalities. To do a Bosu Ball Russian twist take the following steps: Put the Bosu Ball with the flat part on the ground. Begin by standing about a foot behind the bosu ball. Revolution FIT 3-in-1 Trainer System Balance Board. Start in a wide-leg squat, holding the kettlebell in both hands, hanging down in front of you. Lie down on your back and place your feet on top of the ball. RMT® Club. $154. Do the same with the opposite side. my own research shows that most of the NON brand name balance trainers aren't 65cm like the Brand Bosu. The Terra Core is a cross between a STEP and a BOSU but even better. How to do glute bridges: On a yoga mat, rest your head, shoulders, and upper back on the ball and plant your feet on the floor. Your partner throws the med ball toward your chest. BOSU Crunch. It is excellent for training shoulder stability, core exercises, knee rehab, and ankle rehab. Holds up to 159 kg (350 lbs. I can’t either. . ) Weight: 9 kg (19 lbs. increased motor skills. BoSu is the original balance trainer and has been around since 1999. The dome-shaped design remained (as this is the best design to enhance ground-based movement), however the BOSU® Elite's material composition is much different. Weighted BOSU Ball Squats. BOSU ball workouts improve core strength, balance, flexibility, coordination, and cardiovascular fitness. chest press, dumbbell row), on unstable surfaces (e. Bosus resemble a medium-sized stability ball, sawed in half and glued to a round board. The Terra-Core weighs 28lbs and offers a huge variety of workouts. There are many benefits from BOSU ball workouts. Create flashcards for FREE and quiz yourself with an interactive flipper. To do squats on bosu ball, place the ball on the floor with the flat side facing the ground. 3A) BOSU Mountain Climber. Engage core and squeeze glutes as you push through right heel to lift hips up toward the ceiling. Hold the other leg up for 30 seconds. Make it easier: Place the toes of the extended leg on the ground. 65 cm: 5'5" - 5'11". Stand with your feet wider than shoulder-width apart with your toes pointed slightly out. At first glance, the Terra-Core reminded me of an oval-shaped Bosu ball and I did not understand the hype. 1M subscribers Subscribe 10K views 3 years ago #criticalbench #strongbydesign. If you are familiar with a Bosu ball then you know what it’s like to use a balance trainer. Your left arm can be aligned along the left side of your body. This may be seen in such exercises like static hangs, hanging knee-ups, or hanging stair. Hardcore powerlifters and bodybuilders often trashed this style of training. Have a partner stand 5-10 feet in front of you holding a lightweight med ball. If you have difficulty holding the position and your feet shift about, try tucking them beneath a stable object. The Terra-Core is a great piece of equipment that is new to Burn Boot Camp. BALANCE BOARD more images at Amazon. Your core works harder when performing an upper or lower body exercise. 6. Your feet should be positioned 6 - 12" out in front of your body, feet hip-width apart and facing forward or turned out slightly. Exercise balls from different brands may vary in thickness or firmness, and this can change which size is right for you.