Held in farts enter your bloodstream and are bad for your body.
26
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The human sigh acts as a physiological reset button.
23
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
There's 100 trillion good bacteria living in your body.
17
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31