Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
If your stomach didn't produce a new layer of mucous every two weeks, it would digest itself.
33
It takes 17 muscles to smile, 43 to frown.
65
Your ribs move about 5 million times a year, every time you breathe!
60
Pain travels through your body at 350 ft. per second.
36
It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46