Why do athletes and not only have to keep their backs straight?


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Why do athletes and not only have to keep their backs straight?
Source
Why do athletes and not only have to keep their backs straight? - Spine, Intervertebral hernia, Squats, Health, Text, Longpost, Vertebrology
Why do athletes and not only have to keep their backs straight? - Spine, Intervertebral hernia, Squats, Health, Text, Longpost, Vertebrology

Vertebrology Health Intervertebral hernia Spine Squats
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