It takes about 20 seconds for a red blood cell to circle the whole body.
102
The average person's skin weighs twice as much as their brain.
131
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
Your thumb is about the same size as your nose.
124
Every year your body replaces 98% of your atoms.
119
All the chemicals in a human body combined are worth about 6.25 euro (if sold separately).
266