The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
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
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
One human hair can support 3 ounces.
191
Your heart will pump about 212 million liters in its lifetime.
26