Yawns are more contagious among people with closer relationships.
163
When you take a step, you are using up to 200 muscles.
886
The average sperm cell swims at 8 inches per hour.
76
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
The human brain uses approximately as much energy as a 10 watt light bulb.
120
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
Our Right Lungs takes more air than our left lung.
194