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Back pain and stiffness are most often caused by a pulled muscle, a strained ligament, or bruising. Symptoms of back pain usually disappear within a week without special treatment. Although regular exercise is beneficial for all children, intensive training may lead to overuse injuries with back pain in some young athletes. For example, dancers and gymnastsare especially prone to back pain due to overuse.

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In an early act of defiance, every time my mom told me to sit up straight, I did the exact opposite.

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We've all heard that sedentary lifestyles and deskbound jobs can lead to health problems such as obesity and cancer. But now it seems the reverse is also true — with researchers finding that too much standing can be bad for you as well. Up to half the world's employees spend 75 per cent or more of their working day on their feet, from those working in agriculture or construction to assembly lines, waitressing or retail.

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