You can’t survive without sleep! 

You need sleep as much as you need food. Many people neglect the importance of having enough sleep without knowing that humans can actually survive longer without food than without sleep. With water alone, an average person could survive a month to two without food (that also varies from an individual’s body fat and other factors).

But a few sleepless nights will cause the person to start experiencing radical personality and psychological changes. The longest recorded time anyone has ever gone without sleep is 264 hours. At the end of the experiment the subject, Randy Gardner, did not stumble or hallucinate, but scientists warned that such a lengthy period without sleep is dangerous.

Babies: more bones than adults 

When a baby is born, it has 300 bones in its body. By the time the individual reaches adulthood the number of bones will have been reduced to 206. This is because the smaller bones eventually fuse together to form stronger single bones.

A posthumous erection? 

This is a death erection, which has been referred to as ‘angel lust’. It is a post-mortem erection that occurs when a male individual dies vertically or face-down, and as long as the body remains in this position, the effect will remain due to blood subsidence.

How does it happen?

When a man is still alive, the heart pumps blood evenly around the body. When he dies, this mechanism stops and the blood acts by the force of gravity. As with any mass, the blood will settle at the lowest point of the body and cause swelling. So if a man dies vertically, the blood will settle in the legs and collect at the feet.

The pressure will cause the blood vessels and tissues in the feet to swell up to accommodate as much blood as possible. As blood collects, it will fill up to the torso and the blood will attempt to move to a lower position due to gravity, which is the penis (the legs are full by now). The blood causes the penis, consisting of erectile tissue, to fill with blood and expand.

Eating can affect your hearing 

Hearing decreases when you overeat: When you eat too much food, it actually reduces your ability to hear. So consider eating smaller portions, and only eat until you are full.

Only humans shed emotional tears 

Every other animal that produces tears has a physiological reason for doing so, such as eye irritation.

A blood fact 

Human blood travels an average of 60,000 miles (96,540 km) per day on its journey through the body.

Talking is no simple feat 

It takes the interaction of 72 different muscles to produce human speech.

About your tongue 

Relative to size, the tongue is the strongest muscle in the body.

Height difference 

We are about 1cm taller in the morning than in the evening.  Layers of cartilage in the joints get compressed during the day, reducing our height.

A sneeze 

A sneeze can exceed 100 mph: when a sneeze leaves your body, it does so at high speeds — so you should avoid suppressing it and causing damage to your body.

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What else of the body do you find fascinating?

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