Here is a concise summary of the provided text:
**Title:** What Happens When You Die?
**Summary:**
* Many people believe in an afterlife, with 60% of UK citizens and 72% of Americans surveyed believing in some form of life after death.
* **Biological Death:**
+ Heart stops beating, brain activity ceases
+ Initial reactions: muscle relaxation, potential for incontinence, gas release, and brief twitching
+ Cooling of the body (Algor Mortis), stiffening (Rigor Mortis), and eventual decomposition
* **Decomposition:**
+ Soft tissues liquefy, leaving behind bones, cartilage, and hair
+ Timeframe: days to weeks (above ground), 8-12 years (underground) to reduce to a skeleton
* **Philosophical and Religious Perspectives:**
+ Discussions on the concept of a soul, eternal recurrence, reincarnation, and the afterlife (heaven, hell, nirvana)
* **Closing:**
+ A brief, grim reflection on mortality, followed by a promotional message for Squarespace website services.
Here are the key facts extracted from the text, numbered and in short sentences, excluding opinions:
**Death and Afterlife Beliefs**
1. In 2014, a UK Telegraph poll found that nearly 60% of respondents believed some part of us lives on after death.
2. A 2015 US survey by Pure Research reported that 72% of Americans believed in going to heaven after death.
3. The same US survey found that 54% of respondents believed in hell.
**Physical Death Process**
4. Physicians determine death when the heart stops beating and there is no electrical activity in the brain.
5. Cardiac death occurs when the heart stops beating, and blood no longer flows through the body.
6. Near-death experiences can occur within a 4-6 minute "grace period" after clinical death.
7. After death, muscles relax, including the sphincter, leading to bodily releases.
8. Gas in the body may leak out, causing a strong odor.
9. Urine may also be released from the bladder after death.
**Post-Mortem Changes**
10. The body begins to cool down after death, known as algor mortis or death chill.
11. Cooling continues until the body reaches the surrounding temperature.
12. Rigor mortis sets in within 2-6 hours, causing stiffness.
13. Calcium entering muscle cells causes rigor mortis due to lack of blood flow.
14. Bacteria growth leads to decomposition without blood flow.
15. Skin may appear to recede, giving the illusion of hair or nail growth.
16. Skin loosens, and blisters may appear on the body.
17. Putrification occurs when bacteria and microorganisms break down the body.
18. Soft tissues liquefy, leaving behind bones, cartilage, and hair.
**Decomposition Timeline**
19. Left above ground, the body can become a liquefied mess within about a month.
20. Underground, decomposition may take 8-12 years to reduce the body to a skeleton.
21. After around 50 years, even bones can become part of the earth.
**Miscellaneous**
22. "Coffin birth" can occur if a pregnant woman dies, where gases in the abdomen push the newborn out.
23. Nurses have reported hearing moans and groans from dead bodies due to escaping air.
24. Muscle contractions can cause twitching after death.
25. Liver mortis can cause blood to pool in certain areas, leading to a dark purple color in those parts.