(Anti-burst does not mean that it wona#39;t burst at all, but that if it does, it will go down slowly rather than pop.) ac It should be pressure tested to around 450kg (10001b) and should ideally have a non-slip surface. ac The ball must be the right size foranbsp;...
Title | : | Using your exercise ball for weight loss |
Author | : | Lucy Knight |
Publisher | : | - 2005 |
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