Your taste buds are replaced every 10 days.
Your nose can remember 50,000 different scents.
Your lungs can hold up to 5 minutes worth of oxygen.
Your brain uses 20% of the total oxygen and blood in your body.
Your brain keeps developing until your late 40s.
Your bones are composed of 31% water.
Your body has enough iron in it to make a metal nail 3 inches long.
Without your pinky finger, you would lose about 50% of your hand strength.
Within three days of death, the enzymes that once digested your dinner begin to eat you.
When you take one step, you are using up to 200 muscles.