If you don't have a pump yet and prefer not to borrow or buy a separate pump to inflate a practice ball, we recommend the Pro Stability Ball. Inflation, which you have done before, you may be surprised to see how much effort is required to fully inflate a exercise ball, even with a bicycle pump. In the end, I inflated all seven exercise balls with a bicycle pump, with the four ball inflatable adapters and an accessory nozzle that was delivered with my bicycle pump on the other three. (I couldn't securely attach the adapter that came with the Gymnic Classic Plus to my bike pump; the Epitomie Fitness Active Balance Fitness Ball and the Gold es Gym Anti-Burst Body Ball supplied with foot pumps did not contain any adapters. However, the Gymnic Classic Plus is covered with a one-year warranty, which makes it a solid choice if you are looking for extra coverage for your purchase. A suitably sized, properly inflated stability ball requires a person to engage a variety of muscle groups just to maintain balance while using it. Although the company says its balls can be used for fitness purposes, their primary use is for sitting — and the idea of using a stability ball as a chair for posture and core fire benefits has been questioned. (We will never know what role abuse could play in these reports, but judging by the number of “practice ball fail” compilations available on the Internet, it's a popular activity to use them incorrectly until injury. Even if you look at only those models that earned at least a four-star standings with more than five customer reviews, we left three dozen options. Unlike the other models we tried, you need to use the supplied plug remover (or any other tool) to extract the plug; it was exceptionally difficult for us to pull out otherwise, a design that might indicate a superior seal. We started our research by evaluating customer reviews of best-selling and best-rated models on the websites of Academy Sports + Outdoors, Amazon, Dick es Sporting Goods, Target and Walmart, including retailers. When looking for the ball that best suits your body, a great way to find the right fit: while you sit on the ball and your feet sit flat on the floor, make sure your knees and hips are at right angles. By rocking basic exercise movements—such as boards, squats, sit-ups and push-ups — on an unstable surface, you work particularly hard to maintain your balance (and also your muscles). I'm going to inflate these three models with their supplied devices, but quickly confirmed claims from countless owner reviews: there are better tools for the job. We have sat a lot on all the balls we have tested to assess the support; Two models we have tested, the Epitomy Fitness Active Balance Fitness Ball and the Gold it Gym Anti-Burst Body Ball, created the “bean bag chair” effect. 1"The original recommendation for sitting on a ball was based on the Theory that the core muscles (abdominal and back extensor muscles) would be constantly engaged so that the correct posture and balance would be maintained, and you would get some exercise while working at your desk,” wrote Marilyn Moffat, PhD, Professor of Physiotherapy at New York University, in of an email. In an analysis of peer review research and comments on job alternatives, Brian Lowe, Research Engineer in Applied Research and Technology at the National Institute for Occupational Safety and Health, and colleagues found a shortcoming. Data supporting the idea that unstable velvet seats can improve health. However, while reading customer reviews on the websites of Amazon and other retailers, we found dozens of claims of “anti-burst”, “burst-resistant” and “slow-deflate” balls explode. Runner-up: Power Systems VersaBallRunner - our selection is not available or if you do not particularly like the color that matches the size you need, we recommend the Power Systems Stability Ball. For example, you can set a phone reminder that encourages you to correct your posture throughout the day, or invest in one of these easy-to-use gadgets that will help you work for.