Forensic Medicine General 7087b519 Natural stiffening of muscles after death is known as ? A Algor mois B Rigor mois C Postmoem lividity D Cadaveric spasm High-Yield Explanation Ans. is 'b' i.e. Rigor mois Rigor mois is natural stiffening after death as it occurs in all death.Cadeveric spasm does not occur in all deaths.