This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thanatology, Subject name: Forensic Medicine
True about boxer's attitude: 
Select and explain. 
A. Similar to cadaveric spasm, B. Due to muscle protein coagulation, C. Always postmotem in nature, D. Always Antemoem in nature
B: Due to muscle protein coagulation
Answer: B: Due to muscle protein coagulation 
Explanation: HEAT STIFFENING: If the body is subjected to heat exposure at > 65degC, rigidity is produced. Minimum temperature for producing burn is 44degC for 5-6 hours Mechanism: Muscle protein coagulationQ due to heat. Muscles are contracted Conditions: BurnsQ High voltage electric shock Attitude: The legs are flexed at the hips and knees, the arms are flexed at the elbows and held out in front of the body and the fingers are hooked like claws. Fate: The stiffening remains until decomposition. The normal rigor mois does not occurQ in heat stiffening