Turner – the whole point of the ball is to make your muscles work hard to keep you upright!
yes I know that but how many hours do you sit at your desk. Nasa recommend something like a 120 degree recline so the stresses are evenly proportioned out over many parts of your body.
According to the United States Army Public Health Command, sitting on an exercise ball can have a few drawbacks.
For example, because exercise balls lack arm rests and back supports, the upper body might not be properly and fully supported.
The UCLA Comprehensive Spine Center argues that the use of an armrest takes some strain off your neck and shoulders and makes you less likely to slouch.
The Health Command also explains that sitting in a chair in a reclined position significantly eliminates disc pressure in the back, but this position cannot be maintained while sitting on an exercise ball.
There’s no arguing with “The Health Command”…
And the answer to the OP is still Hag H04…