The person appears to be a/an East Asian Female, approximately 30 to 39 years old.
Rigor mortis refers to the stiffening of muscles that occurs after death, which is an important aspect of the post-mortem process. This phenomenon happens due to the depletion of adenosine triphosphate (ATP) in the muscles, leading to a state where they can no longer relax. Typically, rigor mortis begins a few hours after death and can last for up to 12 hours, providing valuable information for forensic science in determining the time of death.
Rigor mortis is when a body becomes stiff after someone dies. This happens because the body runs out of a special energy molecule called ATP, which helps muscles move. After death, the muscles can't relax, making the body feel hard. This stiffness usually starts a few hours after death and can last for about 12 hours.