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
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
You see your nose at all times, your brain just chooses to ignore it.
30
The average sperm cell swims at 8 inches per hour.
76
The human brain doesn't stop developing until about 25 years old.
102