41 Amazing, Fun and Interesting Biology Facts You Must Know


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41 Amazing, Fun and Interesting Biology Facts

Biology talks about life. Everything living around us is related to the study of biology. 

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Here are a few of the amazing, fun and interesting biology facts you must know.


Fact # 1

Humans spend about five years of their lives eating. 


Fact # 2

The only part of the body that has no blood is the cornea of the eye. It receives oxygen directly from the air.

Human eye structure

Fact # 3

An adult skin weighs around 3 to 4 kgs.


Fact # 4

Is a sign of a healthy mind if you hear your name when nobody is calling you.


Fact # 5

Vaccines play a significant role in educating your immune system. 

How vaccines work

Fact # 6

The left side of your body controls the right side of your brain and the right side of your body controls the left side of your brain.


Fact # 7

Potatoes are stems and onions are leaves.


Fact # 8

Chewing gum while studying can help to boost your memory.


Fact # 9

Drinking cold water (500ml) on an empty stomach can boost your metabolism by 30%.


Metabolism level

Fact # 10

8 nights without sleep can result in death.


Fact # 11

About half of your body is bacteria.


Fact # 12

In a lifetime, a human body will process about 100,000 pounds of food.


Fact # 13

In camera terms, the human eye is around 576 megapixels.


Fact # 14

Positive feelings, exercise regularly and build healthy eating habits may boost your immunity.

Healthy habits

Fact # 15

When a person cries and the first drop comes out of the left eye, it’s painful. Right eye is happy. Both indicate frustration.


Fact # 16

An healthy adult human heart beats around 80 times on average in a minute.


Fact # 17

Blowing out birthday candles can increase bacteria on the cake by 1,500%.


Fact # 18

Your heart rate changes with the music you listen to.

Music affect our heart rate

Fact # 19

An individual takes around 23,040 breaths every day, or around 672,768,000 breaths in a lifetime.


Fact # 20

We experience billions of germs per day, however they’re not all bad.


Fact # 21

When an individual reaches 70 years old, the person will have consumed more than 12,000 gallons of water.


Fact # 22

Your thumb is the same length as your nose.


Fact # 23

Side sleeping lower back pain. For quick relief of back pain, put a pillow or blanket between your knees to keep your hips in alignment. If you sleep on your back, placing a pillow or blanket under your knees will take some strain off of your back.

Correct sleep posture

Fact # 24

The brain is one of the fattest organs in the human body, about 60% is fat.


Fact # 25

Every 35 days , your skin replaces itself and your body makes new cells from the food you eat. What you eat literally becomes you.


Fact # 26

Most people die in their sleep during 3:00am – 4:00am because this is the time your body is weakest.


Fact # 27

When you can’t sleep on your first night in a new place, your brain is trying to protect you because our bodies put us in a strange, half-asleep state.  It’s called the “first night effect” in humans.


Fact # 28

Male brains are 8-13% larger than female brains.

Female vs male brain

Fact # 29

Vitamin B12  found in animal-sourced foods, such as egg, fish, meat, milk, yogurt, butter. 


Fact # 30

It doesn’t matter if fingerprints are harmed, they will always grow back in their original pattern.


Fact # 31

Plants have hormones that promote growth and health.


Fact # 32

Hugging each other can help improve memory, reduce stress, and has a lowering effect on blood pressure.

Hugs are so powerful

Fact # 33

Some of the people can hear their eyeballs moving around in their mind.


Fact # 34

You have two kidneys, but only one is necessary to live.


Fact # 35

Brushing your teeth with your opposite hand stimulating the brain’s cognitive and creative functions.


Fact # 36

Most dreams last only 5-20 minutes.


Fact # 37

You have about 70,000 thoughts a day.

How many thoughts does a person have in one day

Fact # 38

Put your hands and feet in warm or hot water and put a bag of frozen peas at the base of your head to reduce headaches.


Fact # 39

Put a cleaned garlic in your ear helps remove pain in ears, ear infections, and headaches quickly and effectively.


Fact # 40

The smallest bones in the human body are found in the ear.


Fact # 41

Light from the sun is made of all the colours of the rainbow.

There are Many Amazing, Fun and Interesting Biology Facts out there!

There are many other Biology facts that are not mentioned in here. If you wish to find out more about them, please drop us your inquiry.

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