For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
The human sigh acts as a physiological reset button.
23
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
Your heart will pump about 212 million liters in its lifetime.
26
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The average sperm cell swims at 8 inches per hour.
76