All of the following factors accelerate the development of rigor mois in a dead body, EXCEPT:
Thin body built
Aerobic exercise
Cold temperature
Strychnine poisoning
Cold temperature slows the onset and progression of rigor mois. It is because of the slow onset and breakdown of ATP in cold weather. Rigor mois usually has an onset 1-2 hours after death and gets well established in the entire body in about 9-12hrs. Factors accelerating the onset of rigor mois are: Warm temperature Thin body built Aerobic exercise Strychnine poisoning (produces convulsions) Ref: Forensic Science: Fundamentals & Investigations By Anthony J. Beino, page 315.