Control freezing death

The convulsions progress, increasing in intensity and frequency until the backbone arches continually. Death comes from asphyxiation caused by paralysis of the neural pathways that control breathing, or by exhaustion from the convulsions. The subject usually dies within 2-3 h after exposure. At the point of death, the body freezes immediately, even in the middle of a convulsion, resulting in instantaneous rigor mortis. 

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