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Walking puts several times your weight on your knees

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Physics really has it out for your knees. Because of the biomechanical levers involved in lifting and propelling your mass forward, a simple, leisurely stroll applies a force of three to four times your body weight onto the cartilage of your knee. If you jog, that number spikes to over seven times. No wonder they start sounding like bubble wrap after you turn thirty.

Walking puts several times your weight on your knees
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