Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The human sigh acts as a physiological reset button.
23
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
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 uses approximately as much energy as a 10 watt light bulb.
120
Early American humans hunted car-size armadillos and used their shells for houses.
12