There's 100 trillion good bacteria living in your body.
17
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
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
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59