The average sperm cell swims at 8 inches per hour.
76
Yawns are more contagious among people with closer relationships.
163
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
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
Your heart will pump about 212 million liters in its lifetime.
26
Your thumb is about the same size as your nose.
124
When you take a step, you are using up to 200 muscles.
886
The average person's skin weighs twice as much as their brain.
131