The human brain doesn't stop developing until about 25 years old.
102
When you take a step, you are using up to 200 muscles.
886
Your thumb is about the same size as your nose.
124
Chewing gum boosts your brain power.
285
Yawns are more contagious among people with closer relationships.
163
One human hair can support 3 ounces.
191
The human brain has the capacity to store everything that you experience.
4k
It takes about 20 seconds for a red blood cell to circle the whole body.
102