In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
It takes about 20 seconds for a red blood cell to circle the whole body.
102
A human being loses an average of 40 to 100 strands of hair a day.
133
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Tigers can see 6 times better at night than humans.
305
If your DNA was stretched out it would reach to the moon 6,000 times.
256