The human body is more marvellous than you think it is. Don’t believe me? Let’s take a ride aboard the magic school bus and delve in.

Stronger than you think

The acid in your stomach, standing at a pH of 1, is so strong it can dissolve metal… In one study, a razor blade became fragile and brittle within 24 hours, retaining only 63% of its original mass. The same thing happens to coins that are accidentally swallowed; they lose mass the whole time they are in the child’s stomach. But most of the time, the coins are either surgically removed or passed out before they can be fully digested.

Your bones are incredibly strong. A block of bone the size of a matchbox can support up to nine tonnes of weight.

You have heard stories about people who lifted boulders off themselves, or dashed to save their falling child in record time. Well, these superheroes were just average human beings like you and me before those life changing moments occurred. Unknown to us, our muscles are capable of more strength than we realise. But our body subconsciously places a limitation on our strength to protect our tendons and muscles from over-exertion. It is only during critical moments that the limitation is lifted, and voila, a new superhero is born.

More sensitive than you realise

Your eyes can distinguish between 2.3 and 7.5 million colours. Your nose is even more amazing: it can tell apart 1 trillion scents. As for your sense of touch, Swedish scientists have debunked the myth that your sense of touch is under-developed. In a ground-breaking study, it was shown that people can detect nano-scale wrinkles while running their fingers upon a seemingly smooth surface.   

Facts you cell-dom hear

Your skin cells shed every 2-4 weeks and if you collect all the skin cells shed in a cycle, they weigh approximately 0.7kg altogether. No need to thank me, you weight conscious people, for telling you the secret to being effortlessly 0.7kg lighter.

However, if you think all cells are so replaceable, think again. Some cells stay with you your entire life—those of the inner lens of your eyes, your heart and parts of your brain. If you suffer a heart attack, then good luck to you. For your heart is unable to regenerate itself. Taking the place of heart muscles are fibrous tissues and scar tissues, which affect the ability of your heart to pump blood.

Lying nicely in the middle of cell lifespan are fat cells. People used to think that fat cells last your entire life, and if you overfeed a baby, it would carry too many fat cells with it its entire life, hence increasing the risk of obesity. Well, the good news is, your parents have not condemned you to a lifetime of obesity. A researcher carbon dated fat cells and found that they, on average, last 12 years. Not exactly a consolation, but at least there is hope for all you weight-conscious people out there.

The lengths we would go

If you are standing on the third storey and held out your intestines (like a rope), it will be long enough to reach your friend standing on the ground floor. If you take all your blood vessels and stretch them out, they will stretch for 90,000 kilometres, which is enough to go around the earth 2 times. If you take all the DNA from your body and uncoiled it, it will stretch 16 billion kilometres. That is the distance to Pluto and back. WARNING: the above experiments have been known to cause death, and excruciating pain, to the human subjects. Please do not attempt.

Other unknown wonders

In 30 minutes, the human body gives off enough heat to bring half a gallon of water to the boiling point. It is a wonder the Earth isn’t overheating yet.

This is embarrassing, but the average person farts 14 times a day. If you don’t remember, you probably did it in your sleep.