As fitness trends come and go, every now and then comes a trend which makes sense. One of those trends if focusing on core development for increased functionality and strength of torso. Most popular piece of equipment for core workout is the exercise ball. Physical therapists and fitness trainers around the world used them for years because they recognized the balls potential to strengthen abdominal and back muscles with increase in stability. How to choose the right exercise ball? Picking the right exercise ball is very important to take advantage of the benefits this piece of equipment can give. A
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