8 interesting ‘Did You Know’ facts
![Cabot-Health-Dreaming](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Dreaming-1.jpg)
![Cabot-Health-Dreaming](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Dreaming-1.jpg)
1. Dreams
12% of sleepers dream in black and white.
![Cabot-Health-Toes](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Toes.jpg)
![Cabot-Health-Toes](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Toes.jpg)
2. No little toes?
Since humans have not developed a need for wisdom teeth, appendixes, or even little toes, scientists believe that those items may be phased out as humans evolve.
![Cabot-Health-Holding-Breath](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Holding-Breath.jpg)
![Cabot-Health-Holding-Breath](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Holding-Breath.jpg)
3. “Rule of 3”
The limit of the human body tends to follow a “Rule of 3”: 3 minutes without air, 3 hours without shelter in extreme conditions, 3 days without water and 3 weeks without food.
![Cabot-Health-Lack-Of-Sleep](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Lack-Of-Sleep.jpg)
![Cabot-Health-Lack-Of-Sleep](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Lack-Of-Sleep.jpg)
4. Lack of sleep
Sleeping less than 7 hours each night reduces your life expectancy.
![Cabot-Health-Sweating2](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Sweating2.jpg)
![Cabot-Health-Sweating2](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Sweating2.jpg)
5. Sweat glands
The average person has more than 2 million sweat glands on the surface on their body.
![Cabot-Health-Sweat](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Sweat.jpg)
![Cabot-Health-Sweat](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Sweat.jpg)
6. Sweat
Speaking of, sweat is actually odourless. It’s the bacteria on your body that causes it to smell.
![Cabot-Health-Pinky-Finger](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Pinky-Finger.jpg)
![Cabot-Health-Pinky-Finger](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Pinky-Finger.jpg)
7. The pinky finger
Without your pinky finger, you would lose about 50% of your hand strength.
![Cabot-Health-Knuckle-Cracking](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Knuckle-Cracking-1.jpg)
![Cabot-Health-Knuckle-Cracking](https://www.cabothealth.com.au/wp-content/uploads/2018/01/Cabot-Health-Knuckle-Cracking-1.jpg)
8. Knuckle cracking
A scientist cracked his knuckles on one hand for over 50 years to prove it did not cause arthritis.
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