An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
The human brain doesn't stop developing until about 25 years old.
102
There are about 1,400 different species of bacteria in your belly button.
10
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