Heres where things differed: people back then moved around all the time. They had housework, work on the farm, walking to get around. All these things and more gave them constant exercise. In addition, they moved as people have moved for millennia.
Our muscles, bones, and tendons are all connected. As a result, if you misalign your back for a long time, you may end up with a shoulder outof whack. When your shoulder begins to hurt, you unconsciously hold your hand differently. The tendons that connect from top to bottom then no longer align correctly. And finally, as a result of all this, the system that comprises the hand is damaged. Some doctors might prescribe carpal tunnel surgery, but it may not be necessary.

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