Muscle trick: Why do your arms feel stuck together?

November 5, 2008

A reader to this blog posted this excellent question: Hi. My kids heard about this “trick,” one which I assume has to do with muscles or musculo-skeletal mechanics (or crampinG) but for which I don’t really have a definite, or detailed explanation. If you extends your arms out, holding your fists side by side together […]

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