The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
If you hold farts in during the day, they'll just come out when you sleep.
16
Your thumb is about the same size as your nose.
124
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16