The answer is: "tetany" .
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{Note: This answer is not to be confused with "tetanus", or "lockjaw".}.
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{Additional note: In medicine, however, "tetany" is also referred to as "intermittent tetanus" or "intermittent cramp".}.
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Electric to mechanical(or physical)
<span>For A Flight Attendant To Buckle Them Up I Believe.</span>