Negative Positive
Title: Excellent Chair!
Review: Brought this for use at work. Due to a herniated disc in my lower back, when I sit for prolonged periods of time, I frequently get very stiff.I have been using the balance ball for 3 weeks now and have noticed I don't get stiff and my core strength has greatly improved. Would highly recommend. However, you have to make sure your computer monitor is high enough so that your neck is not strained and your eyes are not looking down at your monitor.
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