The human brain doesn't stop developing until about 25 years old.
102
Every year your body replaces 98% of your atoms.
119
Chewing gum boosts your brain power.
285
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
Your thumb is about the same size as your nose.
124
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
One human hair can support 3 ounces.
191
It takes about 20 seconds for a red blood cell to circle the whole body.
102